"Fri, 02 Jan 1970 05:33:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700102
Only TIME
05:33:44
General datetime
1970-01-02 05:33:44Z
For Database
1970-01-02 05:33:44
For HTTP1.1
Fri, 02 Jan 1970 05:33:44 GMT