"Fri, 02 Jan 1970 23:31:07"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700102
Only TIME
23:31:07
General datetime
1970-01-02 23:31:07Z
For Database
1970-01-02 23:31:07
For HTTP1.1
Fri, 02 Jan 1970 23:31:07 GMT