Determines the number of days one date occurs after another.
DaysAfter ( date1, date2 ):Long

Obtains the date that occurs a specified number of days after or before another date.
RelativeDate ( date, n ):Date

Obtains a time that occurs a specified number of seconds after or before another time within a 24-hour period.
RelativeTime ( time, n ):Time

Determines the number of seconds one time occurs after another.
SecondsAfter ( time1, time2 ):Long