try this =VLOOKUP(A2;IMPORTRANGE("https://docs.google.com/spreadsheets/d/1bRjd8tBXujn4C1pMi5onqLS8CUQ_Wp9IkW2OkgFQ2nU";"HijriDates!$A$1:$D");3;0)

A2: the date you are looking for

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