• Time Zones When Traveling.

    From Ken Blake@21:1/5 to All on Sat Jul 1 06:02:33 2023
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    I also have a Garmin Venu SQ watch. Does the time on it synch to the
    phone, or do I also have to do that manually?

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  • From Carlos E.R.@21:1/5 to Ken Blake on Sat Jul 1 15:12:18 2023
    On 2023-07-01 15:02, Ken Blake wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    I also have a Garmin Venu SQ watch. Does the time on it synch to the
    phone, or do I also have to do that manually?

    It takes the local time of the network provider when you arrive at
    destination. Not specific about the Pixel.


    --
    Cheers, Carlos.

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  • From Frank Slootweg@21:1/5 to Ken Blake on Sat Jul 1 13:34:06 2023
    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    Normally it stays at the time zone of the origin and switches to the
    time zone of the destination as soon as your phone picks up the mobile
    ('cell') network there.

    If you switch off flight-mode during the flight - which you shouldn't -
    it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    I also have a Garmin Venu SQ watch. Does the time on it synch to the
    phone, or do I also have to do that manually?

    Depends on the watch. My Fitbit Charge 4 syncs with the phone (but
    sometimes needs an Internet connection as well).

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  • From Chris@21:1/5 to Ken Blake on Sat Jul 1 16:26:19 2023
    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    It'll pick up the correct timezone whenever you connect to a local network.

    --- SoupGate-Win32 v1.05
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  • From Ken Blake@21:1/5 to Thanks. Carlos on Sat Jul 1 14:47:56 2023
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    Normally it stays at the time zone of the origin and switches to the
    time zone of the destination as soon as your phone picks up the mobile >('cell') network there.

    Thanks. Carlos said the same thing, so I guess you're both right. <G>



    If you switch off flight-mode during the flight - which you shouldn't -
    it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    I also have a Garmin Venu SQ watch. Does the time on it synch to the
    phone, or do I also have to do that manually?

    Depends on the watch. My Fitbit Charge 4 syncs with the phone (but
    sometimes needs an Internet connection as well).

    I think mine also does, but I'm not sure, and that's why I asked.

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  • From Carlos E.R.@21:1/5 to Chris on Sat Jul 1 23:40:20 2023
    On 2023-07-01 18:26, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    It'll pick up the correct timezone whenever you connect to a local network.

    Define correct :-)

    Things get interesting when you are near a frontier (or time zone
    frontier), and each side keeps different time zones or different summer
    time switch. Or the mobile network provider keeps a different time zone,
    that is :-)

    --
    Cheers, Carlos.

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  • From Chris in Makati@21:1/5 to robin_listas@es.invalid on Sun Jul 2 11:22:33 2023
    On Sat, 1 Jul 2023 23:40:20 +0200, "Carlos E.R."
    <robin_listas@es.invalid> wrote:

    On 2023-07-01 18:26, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    It'll pick up the correct timezone whenever you connect to a local network.

    Define correct :-)

    Things get interesting when you are near a frontier (or time zone
    frontier), and each side keeps different time zones or different summer
    time switch. Or the mobile network provider keeps a different time zone,
    that is :-)

    When I was in the Canary Isles my phone adjusted to Spanish time,
    which was incorrect by 1 hour because there's a time difference to
    mainland Spain. I had to set the time manually to get it correct.

    Chris

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  • From Chris in Makati@21:1/5 to All on Sun Jul 2 11:22:33 2023
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't -
    it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    Chris

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  • From Chris@21:1/5 to Carlos E.R. on Sun Jul 2 10:51:13 2023
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-01 18:26, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    It'll pick up the correct timezone whenever you connect to a local network.

    Define correct :-)

    Things get interesting when you are near a frontier (or time zone
    frontier), and each side keeps different time zones or different summer
    time switch. Or the mobile network provider keeps a different time zone,
    that is :-)

    True I guess. Although, I've never been in that situation. I suppose the Spain/Portugal border is one such place.

    I know at Freiburg-Mulhouse-Basel Airport can be a problem as you can end
    up on a non-EU network which can be expensive for some.

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  • From Carlos E.R.@21:1/5 to Chris in Makati on Sun Jul 2 12:20:56 2023
    On 2023-07-02 05:22, Chris in Makati wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't -
    it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    That's strange, unless you are talking of Windows.

    --
    Cheers, Carlos.

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  • From Carlos E.R.@21:1/5 to Chris in Makati on Sun Jul 2 12:33:09 2023
    On 2023-07-02 05:22, Chris in Makati wrote:
    On Sat, 1 Jul 2023 23:40:20 +0200, "Carlos E.R."
    <robin_listas@es.invalid> wrote:

    On 2023-07-01 18:26, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    It'll pick up the correct timezone whenever you connect to a local network. >>
    Define correct :-)

    Things get interesting when you are near a frontier (or time zone
    frontier), and each side keeps different time zones or different summer
    time switch. Or the mobile network provider keeps a different time zone,
    that is :-)

    When I was in the Canary Isles my phone adjusted to Spanish time,
    which was incorrect by 1 hour because there's a time difference to
    mainland Spain. I had to set the time manually to get it correct.

    Were you using a Spanish provider? That's strange, I have not heard of
    this problem.

    I'm almost sure that the GSM provided time is correct for the islands,
    and the distance to the mainland makes it impossible to connect to a
    tower on the mainland. However, time via internet works differently,
    there could be an issue there.

    Hum. It seems that there are indeed problems with Movistar.

    <https://comunidad.movistar.es/t5/Soporte-M%C3%B3vil/Hora-autom%C3%A1tica-en-Canarias/td-p/1246476>

    <https://comunidad.movistar.es/t5/Soporte-M%C3%B3vil/Hora-automatica-en-Canarias/td-p/3138439>


    --
    Cheers, Carlos.

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  • From Ken Blake@21:1/5 to All on Sun Jul 2 07:51:10 2023
    On Sun, 02 Jul 2023 11:22:33 +0800, Chris in Makati <mail@nospam.com>
    wrote:

    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't - >>it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi

    I won't. Too expensive and not needed.

    it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    Chris

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  • From Frank Slootweg@21:1/5 to Chris in Makati on Sun Jul 2 17:55:05 2023
    Chris in Makati <mail@nospam.com> wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't -
    it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    As Carlos also mentioned. this shouldn't happen, because the phone
    should get the time from the *mobile* ('cell') network, not from a Wi-Fi network. OTOH, a smartphone is a bit of a computer, so some smartphone
    could get the time from 'the Internet' via NTP (Network Time Protocol).

    --- SoupGate-Win32 v1.05
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  • From Carlos E.R.@21:1/5 to Chris on Sun Jul 2 20:04:29 2023
    On 2023-07-02 12:51, Chris wrote:
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-01 18:26, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as
    needed, or do I have to do it manually?

    It'll pick up the correct timezone whenever you connect to a local network. >>
    Define correct :-)

    Things get interesting when you are near a frontier (or time zone
    frontier), and each side keeps different time zones or different summer
    time switch. Or the mobile network provider keeps a different time zone,
    that is :-)

    True I guess. Although, I've never been in that situation. I suppose the Spain/Portugal border is one such place.

    I know at Freiburg-Mulhouse-Basel Airport can be a problem as you can end
    up on a non-EU network which can be expensive for some.

    Indeed.

    I seem to recall that Niagara Falls (I was on the Canada side) was
    another area.

    And from what Chris in Makati says, the Canary Islands is another (at
    least with one provider). I was there long ago, before smartphones, so I
    have forgotten.

    --
    Cheers, Carlos.

    --- SoupGate-Win32 v1.05
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  • From Frank Slootweg@21:1/5 to Ken Blake on Sun Jul 2 18:01:04 2023
    Ken Blake <Ken@invalid.news.com> wrote:
    On Sun, 02 Jul 2023 11:22:33 +0800, Chris in Makati <mail@nospam.com>
    wrote:

    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't - >>it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi

    I won't. Too expensive and not needed.

    Many airlines, especially on international flights (you're flying to
    Italy, aren't you?) offer free Wi-Fi for *messaging*, i.e. things like WhatsApp, iMessages, etc., 'even' in economy class. We/I used it to
    keep in touch with the homefront during our flights to/from Australia
    (via the US! :-)) and my flights to/from the US.

    [...]

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  • From Carlos E.R.@21:1/5 to Frank Slootweg on Sun Jul 2 20:06:45 2023
    On 2023-07-02 19:55, Frank Slootweg wrote:
    Chris in Makati <mail@nospam.com> wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't - >>> it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    As Carlos also mentioned. this shouldn't happen, because the phone
    should get the time from the *mobile* ('cell') network, not from a Wi-Fi network. OTOH, a smartphone is a bit of a computer, so some smartphone
    could get the time from 'the Internet' via NTP (Network Time Protocol).

    Yes. But NTP uses UTC, not local time. There is no zone information in
    NTP protocol.

    But computers using the Windows method to setup time, those can be
    affected, they use "local" time.

    --
    Cheers, Carlos.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Carlos E.R.@21:1/5 to Frank Slootweg on Sun Jul 2 20:07:44 2023
    On 2023-07-02 20:01, Frank Slootweg wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    On Sun, 02 Jul 2023 11:22:33 +0800, Chris in Makati <mail@nospam.com>
    wrote:

    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't - >>>> it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely. >>>
    Also if you use in-flight wi-fi

    I won't. Too expensive and not needed.

    Many airlines, especially on international flights (you're flying to Italy, aren't you?) offer free Wi-Fi for *messaging*, i.e. things like WhatsApp, iMessages, etc., 'even' in economy class. We/I used it to
    keep in touch with the homefront during our flights to/from Australia
    (via the US! :-)) and my flights to/from the US.

    That's nice :-)


    [...]

    --
    Cheers, Carlos.

    --- SoupGate-Win32 v1.05
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  • From Ken Blake@21:1/5 to All on Sun Jul 2 13:46:35 2023
    On 2 Jul 2023 18:01:04 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    Ken Blake <Ken@invalid.news.com> wrote:
    On Sun, 02 Jul 2023 11:22:33 +0800, Chris in Makati <mail@nospam.com>
    wrote:

    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't - >> >>it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely. >> >
    Also if you use in-flight wi-fi

    I won't. Too expensive and not needed.

    Many airlines, especially on international flights (you're flying to
    Italy, aren't you?)

    Yes. Rome.


    offer free Wi-Fi for *messaging*, i.e. things like
    WhatsApp, iMessages, etc., 'even' in economy class. We/I used it to
    keep in touch with the homefront during our flights to/from Australia
    (via the US! :-)) and my flights to/from the US.


    I can wait until arrival and use the free WI-fin in the hotel. I hate messaging, because it's very hard for me to type on the tiny keyboard.

    [...]

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  • From Frank Slootweg@21:1/5 to Carlos E.R. on Sun Jul 2 20:19:46 2023
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-02 19:55, Frank Slootweg wrote:
    Chris in Makati <mail@nospam.com> wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't - >>> it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely. >>
    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    As Carlos also mentioned. this shouldn't happen, because the phone should get the time from the *mobile* ('cell') network, not from a Wi-Fi network. OTOH, a smartphone is a bit of a computer, so some smartphone could get the time from 'the Internet' via NTP (Network Time Protocol).

    Yes. But NTP uses UTC, not local time. There is no zone information in
    NTP protocol.

    Oops! Brain fog! :-) Of course you're right.

    Theoretically, the phone could get the UTC time by NTP and the
    location - and hence the timezone - from GPS (or another location
    source?), but that actually happening in a plane in full flight is highly unlikely.

    OTOH, if the phone used Wi-Fi location services and Google somehow
    tracks the location of the Wi-Fi AP in the plane, it *could* work, theoretically.

    But computers using the Windows method to setup time, those can be
    affected, they use "local" time.

    But only if they know what location is "local", which won't happen in
    a plane.

    --- SoupGate-Win32 v1.05
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  • From Ken Blake@21:1/5 to robin_listas@es.invalid on Sun Jul 2 13:50:44 2023
    On Sun, 2 Jul 2023 20:04:29 +0200, "Carlos E.R."
    <robin_listas@es.invalid> wrote:

    On 2023-07-02 12:51, Chris wrote:
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-01 18:26, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as >>>>> needed, or do I have to do it manually?

    It'll pick up the correct timezone whenever you connect to a local network.

    Define correct :-)

    Things get interesting when you are near a frontier (or time zone
    frontier), and each side keeps different time zones or different summer
    time switch. Or the mobile network provider keeps a different time zone, >>> that is :-)

    True I guess. Although, I've never been in that situation. I suppose the
    Spain/Portugal border is one such place.

    I know at Freiburg-Mulhouse-Basel Airport can be a problem as you can end
    up on a non-EU network which can be expensive for some.

    Indeed.

    I know that airport, which I thought was just called Basel, from
    having flown home from there after cruising down the Rhine several
    years ago. I was very surprised to find that, despite its name, it
    wasn't even in Switzerland.

    --- SoupGate-Win32 v1.05
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  • From Chris in Makati@21:1/5 to All on Mon Jul 3 13:53:39 2023
    On 2 Jul 2023 17:55:05 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    Chris in Makati <mail@nospam.com> wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't - >> >it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    As Carlos also mentioned. this shouldn't happen, because the phone
    should get the time from the *mobile* ('cell') network, not from a Wi-Fi >network. OTOH, a smartphone is a bit of a computer, so some smartphone
    could get the time from 'the Internet' via NTP (Network Time Protocol).

    I was using an iPhone, and the time definitely changed at some point
    during the flight. I assumed it used Apple's Location Services to
    determine that I was in a different time zone, but it definitely
    didn't connect to a mobile network. My only connection with the
    outside world was via a wi-fi connection I had used, or possibly a GPS
    signal.

    Chris

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  • From Chris in Makati@21:1/5 to robin_listas@es.invalid on Mon Jul 3 13:53:39 2023
    On Sun, 2 Jul 2023 12:33:09 +0200, "Carlos E.R."
    <robin_listas@es.invalid> wrote:

    When I was in the Canary Isles my phone adjusted to Spanish time,
    which was incorrect by 1 hour because there's a time difference to
    mainland Spain. I had to set the time manually to get it correct.

    Were you using a Spanish provider? That's strange, I have not heard of
    this problem.

    I was roaming during my visit there, but don't remember which Spanish
    network I was connected to.

    Chris

    --- SoupGate-Win32 v1.05
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  • From Chris@21:1/5 to Ken Blake on Mon Jul 3 09:47:22 2023
    Ken Blake <Ken@invalid.news.com> wrote:
    On Sun, 2 Jul 2023 20:04:29 +0200, "Carlos E.R."
    <robin_listas@es.invalid> wrote:

    On 2023-07-02 12:51, Chris wrote:
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-01 18:26, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I have a Pixel 4a. What happens to its display of the time when
    traveling on an airplane? Does the time zone change automatically as >>>>>> needed, or do I have to do it manually?

    It'll pick up the correct timezone whenever you connect to a local network.

    Define correct :-)

    Things get interesting when you are near a frontier (or time zone
    frontier), and each side keeps different time zones or different summer >>>> time switch. Or the mobile network provider keeps a different time zone, >>>> that is :-)

    True I guess. Although, I've never been in that situation. I suppose the >>> Spain/Portugal border is one such place.

    I know at Freiburg-Mulhouse-Basel Airport can be a problem as you can end >>> up on a non-EU network which can be expensive for some.

    Indeed.

    I know that airport, which I thought was just called Basel, from
    having flown home from there after cruising down the Rhine several
    years ago. I was very surprised to find that, despite its name, it
    wasn't even in Switzerland.

    Me too when I flew to Basel a few years ago. You have to be very careful
    when through border control as you'll end up in the wrong COUNTRY! :D

    --- SoupGate-Win32 v1.05
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  • From Joerg Lorenz@21:1/5 to Chris on Mon Jul 3 12:18:53 2023
    On 03.07.23 11:47, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I know that airport, which I thought was just called Basel, from
    having flown home from there after cruising down the Rhine several
    years ago. I was very surprised to find that, despite its name, it
    wasn't even in Switzerland.

    Me too when I flew to Basel a few years ago. You have to be very careful
    when through border control as you'll end up in the wrong COUNTRY! :D

    Bullshit. All three countries on the Basel-Mulhouse Airport which is the correct name are members of the Schengen Area.

    --
    Sent with Betterbird from a Silicon-Mac. Simply better.
    www.betterbird.eu

    --- SoupGate-Win32 v1.05
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  • From Carlos E.R.@21:1/5 to Frank Slootweg on Mon Jul 3 14:35:49 2023
    On 2023-07-02 22:19, Frank Slootweg wrote:
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-02 19:55, Frank Slootweg wrote:
    Chris in Makati <mail@nospam.com> wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't -
    it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely. >>>>
    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    As Carlos also mentioned. this shouldn't happen, because the phone
    should get the time from the *mobile* ('cell') network, not from a Wi-Fi >>> network. OTOH, a smartphone is a bit of a computer, so some smartphone
    could get the time from 'the Internet' via NTP (Network Time Protocol).

    Yes. But NTP uses UTC, not local time. There is no zone information in
    NTP protocol.

    Oops! Brain fog! :-) Of course you're right.

    Theoretically, the phone could get the UTC time by NTP and the
    location - and hence the timezone - from GPS (or another location
    source?), but that actually happening in a plane in full flight is highly unlikely.

    On some plains GPS works. On the last one I tried, I could not get a
    fix, the metal cabin impeded it, I guess. Just a month before, I could
    track the approach path. I think it did not work at altitude.


    OTOH, if the phone used Wi-Fi location services and Google somehow
    tracks the location of the Wi-Fi AP in the plane, it *could* work, theoretically.

    But computers using the Windows method to setup time, those can be
    affected, they use "local" time.

    But only if they know what location is "local", which won't happen in
    a plane.

    No, the people doing the initial configuration would setup the "locale"
    for that Windows setup, and would probably never change. So, assume headquarters.

    Unless they have designed and run some application to track the flight
    location and apply it (if it doesn't involve a reboot, I suspect).


    --
    Cheers, Carlos.

    --- SoupGate-Win32 v1.05
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  • From Chris@21:1/5 to Joerg Lorenz on Mon Jul 3 15:05:38 2023
    Joerg Lorenz <hugybear@gmx.ch> wrote:
    On 03.07.23 11:47, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I know that airport, which I thought was just called Basel, from
    having flown home from there after cruising down the Rhine several
    years ago. I was very surprised to find that, despite its name, it
    wasn't even in Switzerland.

    Me too when I flew to Basel a few years ago. You have to be very careful
    when through border control as you'll end up in the wrong COUNTRY! :D

    Bullshit. All three countries on the Basel-Mulhouse Airport which is the correct name are members of the Schengen Area.

    All I can say is that when I went there were many, many signs making sure
    you ended up in the correct country. Not sure what schengen has to do with it...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Frank Slootweg@21:1/5 to Carlos E.R. on Mon Jul 3 15:39:46 2023
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-02 22:19, Frank Slootweg wrote:
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-02 19:55, Frank Slootweg wrote:
    Chris in Makati <mail@nospam.com> wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't -
    it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    As Carlos also mentioned. this shouldn't happen, because the phone >>> should get the time from the *mobile* ('cell') network, not from a Wi-Fi >>> network. OTOH, a smartphone is a bit of a computer, so some smartphone >>> could get the time from 'the Internet' via NTP (Network Time Protocol). >>
    Yes. But NTP uses UTC, not local time. There is no zone information in
    NTP protocol.

    Oops! Brain fog! :-) Of course you're right.

    Theoretically, the phone could get the UTC time by NTP and the
    location - and hence the timezone - from GPS (or another location
    source?), but that actually happening in a plane in full flight is highly unlikely.

    On some plains GPS works. On the last one I tried, I could not get a
    fix, the metal cabin impeded it, I guess. Just a month before, I could
    track the approach path. I think it did not work at altitude.

    Sigh! More brain fog! :-(

    I actually used the GPS in my Android tablet on a flight from
    Darwin (Australia) to Singapore. That plane didn't have any personal
    screen, so also no flight-path info. I wanted to know how we were
    progressing, so I used the world map of the OsmAnd+ app with the
    tablet's GPS, while holding the tablet near the window. Worked perfectly
    fine.

    So my described scenario is not "highly unlikely", it 'just' depends
    on the right software (SMOP, Small Matter Of Programming) to use the
    location from GPS and NTP via the plane's Wi-Fi network, to set the time
    of the phone. (Don't know if the plane's Wi-Fi would allow a connection
    to the NTP port.)

    [...]

    --- SoupGate-Win32 v1.05
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  • From Frank Slootweg@21:1/5 to Chris in Makati on Mon Jul 3 15:41:32 2023
    Chris in Makati <mail@nospam.com> wrote:
    On 2 Jul 2023 17:55:05 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    Chris in Makati <mail@nospam.com> wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid>
    wrote:

    If you switch off flight-mode during the flight - which you shouldn't - >> >it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely. >>
    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    As Carlos also mentioned. this shouldn't happen, because the phone
    should get the time from the *mobile* ('cell') network, not from a Wi-Fi >network. OTOH, a smartphone is a bit of a computer, so some smartphone >could get the time from 'the Internet' via NTP (Network Time Protocol).

    I was using an iPhone, and the time definitely changed at some point
    during the flight. I assumed it used Apple's Location Services to
    determine that I was in a different time zone, but it definitely
    didn't connect to a mobile network. My only connection with the
    outside world was via a wi-fi connection I had used, or possibly a GPS signal.

    Ah! An *iPhone*! That explains everything! (Just kidding.)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Joerg Lorenz@21:1/5 to All on Mon Jul 3 17:46:34 2023
    Am 03.07.23 um 17:05 schrieb Chris:
    Joerg Lorenz <hugybear@gmx.ch> wrote:
    Bullshit. All three countries on the Basel-Mulhouse Airport which is the
    correct name are members of the Schengen Area.

    All I can say is that when I went there were many, many signs making sure
    you ended up in the correct country. Not sure what schengen has to do with it...

    That is an organisational issue. The Airport is located on French territory.

    --
    Gutta cavat lapidem (Ovid)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Dave Royal@21:1/5 to All on Mon Jul 3 16:10:13 2023
    On 03 Jul 2023 13:53:39 +0800 Chris in Makati wrote:
    On Sun, 2 Jul 2023 12:33:09 +0200, "Carlos E.R."
    <robin_listas@es.invalid> wrote:

    When I was in the Canary Isles my phone adjusted to Spanish time,
    which was incorrect by 1 hour because there's a time difference to
    mainland Spain. I had to set the time manually to get it correct.

    Were you using a Spanish provider? That's strange, I have not heard of
    this problem.

    I was roaming during my visit there, but don't remember which Spanish
    network I was connected to.

    Chris

    Happened to my wife earlier this year, roaming on Movistar. She was using
    the titsa app to find the next bus, so had to fix the time.

    I vaguely recall I was roaming on Voda ES. I didn't notice if the time was wrong.


    --
    (Remove numerics from email address)

    --- SoupGate-Win32 v1.05
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  • From Chris@21:1/5 to Joerg Lorenz on Mon Jul 3 18:58:48 2023
    Joerg Lorenz <hugybear@gmx.ch> wrote:
    Am 03.07.23 um 17:05 schrieb Chris:
    Joerg Lorenz <hugybear@gmx.ch> wrote:
    Bullshit. All three countries on the Basel-Mulhouse Airport which is the >>> correct name are members of the Schengen Area.

    All I can say is that when I went there were many, many signs making sure
    you ended up in the correct country. Not sure what schengen has to do with >> it...

    That is an organisational issue.

    Exactly my point. You're adding what, exactly?

    The Airport is located on French territory.

    No shit...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Carlos E.R.@21:1/5 to Frank Slootweg on Mon Jul 3 23:31:16 2023
    On 2023-07-03 17:39, Frank Slootweg wrote:
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-02 22:19, Frank Slootweg wrote:
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-02 19:55, Frank Slootweg wrote:
    Chris in Makati <mail@nospam.com> wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid> >>>>>> wrote:

    If you switch off flight-mode during the flight - which you shouldn't -
    it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of
    wherever the internet gateway is on the ground is located.

    As Carlos also mentioned. this shouldn't happen, because the phone >>>>> should get the time from the *mobile* ('cell') network, not from a Wi-Fi >>>>> network. OTOH, a smartphone is a bit of a computer, so some smartphone >>>>> could get the time from 'the Internet' via NTP (Network Time Protocol). >>>>
    Yes. But NTP uses UTC, not local time. There is no zone information in >>>> NTP protocol.

    Oops! Brain fog! :-) Of course you're right.

    Theoretically, the phone could get the UTC time by NTP and the
    location - and hence the timezone - from GPS (or another location
    source?), but that actually happening in a plane in full flight is highly >>> unlikely.

    On some plains GPS works. On the last one I tried, I could not get a

    Goof.plane or airplane

    fix, the metal cabin impeded it, I guess. Just a month before, I could
    track the approach path. I think it did not work at altitude.

    Sigh! More brain fog! :-(

    I actually used the GPS in my Android tablet on a flight from
    Darwin (Australia) to Singapore. That plane didn't have any personal
    screen, so also no flight-path info. I wanted to know how we were progressing, so I used the world map of the OsmAnd+ app with the
    tablet's GPS, while holding the tablet near the window. Worked perfectly fine.

    I don't remember if I tried placing the phone at the window, maybe I did
    not have a window seat.


    So my described scenario is not "highly unlikely", it 'just' depends
    on the right software (SMOP, Small Matter Of Programming) to use the
    location from GPS and NTP via the plane's Wi-Fi network, to set the time
    of the phone. (Don't know if the plane's Wi-Fi would allow a connection
    to the NTP port.)

    I think it is a service provided by the "router", if it is a good one.
    It will have a DHCP server, and I think time is one of the services it
    can assign and say "ask the router". Some protocols need time in sync.

    <https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol#Options>

    See the table there, "time offset" is one posibility. "Time server" is
    another.


    It makes sense for the flight "router" to provide several services
    locally instead of the expensive internet.


    --
    Cheers, Carlos.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Carlos E.R.@21:1/5 to Chris on Mon Jul 3 23:37:11 2023
    On 2023-07-03 17:05, Chris wrote:
    Joerg Lorenz <hugybear@gmx.ch> wrote:
    On 03.07.23 11:47, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I know that airport, which I thought was just called Basel, from
    having flown home from there after cruising down the Rhine several
    years ago. I was very surprised to find that, despite its name, it
    wasn't even in Switzerland.

    Me too when I flew to Basel a few years ago. You have to be very careful >>> when through border control as you'll end up in the wrong COUNTRY! :D

    Bullshit. All three countries on the Basel-Mulhouse Airport which is the
    correct name are members of the Schengen Area.

    All I can say is that when I went there were many, many signs making sure
    you ended up in the correct country. Not sure what schengen has to do with it...

    That there are no frontiers. Once outside, if you end on the "wrong
    country" you can go around the airport to the intended one, without a
    passport control (normally). Of course, not knowing the area this can be
    quite inconvenient.

    I did not know this peculiarity of that airport, so thanks for telling
    us :-)

    --
    Cheers, Carlos.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Chris@21:1/5 to Carlos E.R. on Tue Jul 4 10:22:33 2023
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-03 17:05, Chris wrote:
    Joerg Lorenz <hugybear@gmx.ch> wrote:
    On 03.07.23 11:47, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I know that airport, which I thought was just called Basel, from
    having flown home from there after cruising down the Rhine several
    years ago. I was very surprised to find that, despite its name, it
    wasn't even in Switzerland.

    Me too when I flew to Basel a few years ago. You have to be very careful >>>> when through border control as you'll end up in the wrong COUNTRY! :D

    Bullshit. All three countries on the Basel-Mulhouse Airport which is the >>> correct name are members of the Schengen Area.

    All I can say is that when I went there were many, many signs making sure
    you ended up in the correct country. Not sure what schengen has to do with >> it...

    That there are no frontiers. Once outside, if you end on the "wrong
    country" you can go around the airport to the intended one, without a passport control (normally). Of course, not knowing the area this can be quite inconvenient.

    I agree, not the end of the world but would waste quite a fair bit of time.


    I did not know this peculiarity of that airport, so thanks for telling
    us :-)


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Frank Slootweg@21:1/5 to Carlos E.R. on Tue Jul 4 17:47:28 2023
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-03 17:39, Frank Slootweg wrote:
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-02 22:19, Frank Slootweg wrote:
    Carlos E.R. <robin_listas@es.invalid> wrote:
    On 2023-07-02 19:55, Frank Slootweg wrote:
    Chris in Makati <mail@nospam.com> wrote:
    On 1 Jul 2023 13:34:06 GMT, Frank Slootweg <this@ddress.is.invalid> >>>>>> wrote:

    If you switch off flight-mode during the flight - which you shouldn't -
    it might pick up a cell tower en-route (and set the timezone
    accordinly), but with a normal commercial flight that's highly unlikely.

    Also if you use in-flight wi-fi it can change the time zone to
    something completely different. Presumably it's the time zone of >>>>>> wherever the internet gateway is on the ground is located.

    As Carlos also mentioned. this shouldn't happen, because the phone >>>>> should get the time from the *mobile* ('cell') network, not from a Wi-Fi
    network. OTOH, a smartphone is a bit of a computer, so some smartphone >>>>> could get the time from 'the Internet' via NTP (Network Time Protocol). >>>>
    Yes. But NTP uses UTC, not local time. There is no zone information in >>>> NTP protocol.

    Oops! Brain fog! :-) Of course you're right.

    Theoretically, the phone could get the UTC time by NTP and the
    location - and hence the timezone - from GPS (or another location
    source?), but that actually happening in a plane in full flight is highly >>> unlikely.

    On some plains GPS works. On the last one I tried, I could not get a

    Goof.plane or airplane

    fix, the metal cabin impeded it, I guess. Just a month before, I could
    track the approach path. I think it did not work at altitude.

    Sigh! More brain fog! :-(

    I actually used the GPS in my Android tablet on a flight from
    Darwin (Australia) to Singapore. That plane didn't have any personal screen, so also no flight-path info. I wanted to know how we were progressing, so I used the world map of the OsmAnd+ app with the
    tablet's GPS, while holding the tablet near the window. Worked perfectly fine.

    I don't remember if I tried placing the phone at the window, maybe I did
    not have a window seat.


    So my described scenario is not "highly unlikely", it 'just' depends
    on the right software (SMOP, Small Matter Of Programming) to use the location from GPS and NTP via the plane's Wi-Fi network, to set the time
    of the phone. (Don't know if the plane's Wi-Fi would allow a connection
    to the NTP port.)

    I think it is a service provided by the "router", if it is a good one.
    It will have a DHCP server, and I think time is one of the services it
    can assign and say "ask the router". Some protocols need time in sync.

    <https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol#Options>

    See the table there, "time offset" is one posibility. "Time server" is another.


    It makes sense for the flight "router" to provide several services
    locally instead of the expensive internet.

    Interesting! Thanks for the pointer. I didn't know DHCP had so many
    other functions ('options').

    Later on the Wikipedia page, it also specifically mentions 'Timezone',
    so perhaps it's not even needed to use NTP nor GPS.

    <https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol#Other_extensions>

    Perhaps a network specialist can shed a light on whether or not it's
    likely that a 'router' on board an airplane, would/could provide
    timezone/NTP functionality to a Wi-Fi connected device of a passenger.
    (AFAIK, CJ doesn't subscribe to this group.)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Frank Slootweg@21:1/5 to Chris on Tue Jul 4 17:31:48 2023
    Chris <ithinkiam@gmail.com> wrote:
    Joerg Lorenz <hugybear@gmx.ch> wrote:
    On 03.07.23 11:47, Chris wrote:
    Ken Blake <Ken@invalid.news.com> wrote:
    I know that airport, which I thought was just called Basel, from
    having flown home from there after cruising down the Rhine several
    years ago. I was very surprised to find that, despite its name, it
    wasn't even in Switzerland.

    Me too when I flew to Basel a few years ago. You have to be very careful >> when through border control as you'll end up in the wrong COUNTRY! :D

    Bullshit. All three countries on the Basel-Mulhouse Airport which is the correct name are members of the Schengen Area.

    All I can say is that when I went there were many, many signs making sure
    you ended up in the correct country. Not sure what schengen has to do with it...

    I remember similar problems at Geneva airport, a long, long time ago, pre-Schengen. You had to take the right route to and with your rental
    car, so that the car from country X, didn't - even temporarily - end up
    in country Y. For example my French rental car destined for (use in)
    France, shouldn't touch Swiss territory, or hell would break loose! :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Andy Burns@21:1/5 to Frank Slootweg on Tue Jul 4 18:58:28 2023
    Frank Slootweg wrote:

    On some plains GPS works. On the last one I tried, I could not get a
    fix, the metal cabin impeded it, I guess. Just a month before, I could
    track the approach path. I think it did not work at altitude.

    You might exceed the CoCom limits if you use your GPS on a Virgin
    Galactic flight, but not onboard any commercial flight since Concorde
    retired :-P

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Frank Slootweg@21:1/5 to Andy Burns on Tue Jul 4 18:51:32 2023
    Andy Burns <usenet@andyburns.uk> wrote:
    Frank Slootweg wrote:

    On some plains GPS works. On the last one I tried, I could not get a
    fix, the metal cabin impeded it, I guess. Just a month before, I could track the approach path. I think it did not work at altitude.

    You might exceed the CoCom limits if you use your GPS on a Virgin
    Galactic flight, but not onboard any commercial flight since Concorde
    retired :-P

    Actually Carlos wrote that. Credit/blame where it's due!

    Luckily Carlos could *not* "get a fix"! :-)

    --- SoupGate-Win32 v1.05
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