Ajuda del LibreOffice 24.8
Retorna el dia d'un valor de data determinat. El dia es retorna com un enter entre 1 i 31. També podeu introduir un valor de data/hora negatiu.
DIA(Nombre)
Number is the internal date number.
DAY() returns the integer part of the day.
=DAY(1) returns 31 (since LibreOffice starts counting at zero from December 30, 1899)
=DAY(NOW()) returns the current day.
=DAY(C4) returns 5 if you enter 1901-08-05 in cell C4 (the date value might get formatted differently after you press Enter).