"Mon, 02 Feb 1970 22:41:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700202
Only TIME
22:41:13
General datetime
1970-02-02 22:41:13Z
For Database
1970-02-02 22:41:13
For HTTP1.1
Mon, 02 Feb 1970 22:41:13 GMT