Date and time handling.
type t = {}Date and time type.
compare d1 d2 returns 0 if d1 is the same date and time as d2, a
negative integer if d1 is before d2, and a positive integer if d1
is after d2.
The usual six comparison operators (to benefit from local open,
i.e. write Gammu.DateTime.(d1 < d2) instead of
Gammu.DateTime.compare d1 d2 < 0.
val check_date : t ‑> boolChecks whether date is valid. This does not check time, see check_time
for this.
val check_time : t ‑> boolChecks whether time is valid. This does not check date, see check_date
for this.
val os_date_time : ?timezone:bool ‑> t ‑> stringConverts timestamp to string according to OS settings.