2.1.3 Literals for Time Differences

Like date literals you have to specify time differences as strings. The conversion mechanism for time differences recognizes multiple time units:
M
means Minutes
H
means Hours
d
means days
w
means weeks
m
means months
y
means years
The value "1y 10d 40M" means a time difference of 1 year 10 days and 40 minutes. The value "1.5H" means a difference of one and a half hour and is equivalent to "1H 30M".