"Tue, 03 Feb 1970 00:03:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700203
Only TIME
00:03:14
General datetime
1970-02-03 00:03:14Z
For Database
1970-02-03 00:03:14
For HTTP1.1
Tue, 03 Feb 1970 00:03:14 GMT