DATEDIF(A1; A2; "d") A1 is "1st of January 1995" and A2 is "15th of June 1999" returns number of days 1626
DATEDIF( A1; A2; "d"), sendo A1 o "Primeiro de Xaneiro do 1995" e A2 o "15 de Xuño de 1999", devolve 1626 días