Ajuda del LibreOffice 24.8
Retorna el mes d'un valor de data determinat. El mes es retorna com un enter entre 1 i 12.
MES(Nombre)
Number is the internal date number.
MONTH() returns the integer part of the month.
=MONTH(NOW()) returns the current month.
=MONTH(C4) returns 7 if you enter 2000-07-07 to cell C4 (that date value might get formatted differently after you press Enter).