Duration
A period of time, specified as a number of years, months, and days.
Syntax:
yearsy monthsm daysd
Capitalization is ignored.
Examples:
3y2m15d equals 3 years, 2 months and 15 days
15y equals 15 years
36m equals 36 months
15d equals 15 days
Durations can be scaled up by multiplication. If the field SERVICE contains the value 22.5, then (1y * SERVICE) returns 22.5 years.