CONVERT { TIME STAMP time_stamp TIME ZONE tz
INTO [DATE dat] [TIME tim] [DAYLIGHT SAVING TIME dst] }
| { DATE dat [TIME tim [DAYLIGHT SAVING TIME dst]]
INTO TIME STAMP time_stamp TIME ZONE tz }.
Either converts a date and time specification into dat and tim with reference to a tz time zone in a
UTC
time stamp and returns the result in
time_stamp, or it converts a UTC time stamp in time_stamp
into date and time specifications and returns the results in dat and tim.