"Mon, 02 Feb 1970 07:48:53"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700202
Only TIME
07:48:53
General datetime
1970-02-02 07:48:53Z
For Database
1970-02-02 07:48:53
For HTTP1.1
Mon, 02 Feb 1970 07:48:53 GMT