DatePlus
DatePlus[date, n] gives the date n days after date. DatePlus[date, {n, "unit"}] uses specified time units.
Examples
Add time to dates:
(* 10 days from now *)
DatePlus[Now, 10]
(* 3 months later *)
DatePlus[DateObject[{2024, 1, 15}], {3, "Month"}]
(* 1 year and 6 months *)
DatePlus[Today, {{1, "Year"}, {6, "Month"}}]Please visit the official Wolfram Language Reference for more details.