"Mon, 02 Mar 1970 00:54:05"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700302
Only TIME
00:54:05
General datetime
1970-03-02 00:54:05Z
For Database
1970-03-02 00:54:05
For HTTP1.1
Mon, 02 Mar 1970 00:54:05 GMT