Use TIME() to return the current time or the time portion of a DateTime field or expression. The time is returned as an eight byte character string in the format HH:MM:SS using a 24 hour clock.
Note: Any date portion of a DateTime value is ignored.
TIME(<D>)
When called with no parameter, TIME() returns the current system time.
When the optional DateTime parameter D is specified, TIME() returns the time portion of the supplied DateTime field or expression.
Assuming a current system time of 3:38:52 PM,
TIME() = "15:38:52"
A time field LOGIN_TIME defines a field containing times in the format HH:MM:DD PM. Assuming an initial field value of 11:32:59 PM, the time function would convert the time field into the following character string (note the 24 hour clock output):
TIME(LOGIN_TIME) = “23:32:59”