"Tue, 03 Feb 1970 04:34:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700203
Only TIME
04:34:31
General datetime
1970-02-03 04:34:31Z
For Database
1970-02-03 04:34:31
For HTTP1.1
Tue, 03 Feb 1970 04:34:31 GMT