[in, out] VARIANT – Represents the currently used global date and time. The value can be any of the following:
Javascript Date object
VT_DATE
Note: DateTime (e.g. in C#) is automatically converted to
VT_DATE.
_time_t
Int or long values representing the number of seconds elapsed since
00:00:00 on January 1, 1970, Coordinated Universal Time.
double
double values representing the number of miliseconds elapsed
since 00:00:00 on January 1, 1970, Coordinated Universal Time.