Timespan

The following units of timespan are supported:

Description	ID	Label	Notes
Second	sec	sec
Minute	min	min
Hour	h	h
Day	d	d
Week	wk	wk
Month	mo	mo	= 365.25 / 12 days
Quarter	qtr	qtr	= 3 months = 365.25 / 4 days
Year	yd	yd	= 12 months = 365.25 days