"Fri, 02 Jan 1970 07:31:08"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700102
Only TIME
07:31:08
General datetime
1970-01-02 07:31:08Z
For Database
1970-01-02 07:31:08
For HTTP1.1
Fri, 02 Jan 1970 07:31:08 GMT