DatePlus

WMA link


DatePlus[date, n]

finds the date n days after date.

DatePlus[date, {n, "unit"}]

finds the date n units after date.

DatePlus[date, {{$n_1$, "$unit_1$"}, {$n_2$, "$unit_2$"}, ...}]

finds the date which is $n_i$ specified units after date.

DatePlus[n]

finds the date n days after the current date.

DatePlus[offset]

finds the date which is offset from the current date.

Add 73 days to Feb 5, 2010:

Add 8 weeks and 1 day to March 16, 1999:

DateObject
DateString