"Fri, 02 Jan 1970 05:54:52"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700102
Only TIME
05:54:52
General datetime
1970-01-02 05:54:52Z
For Database
1970-01-02 05:54:52
For HTTP1.1
Fri, 02 Jan 1970 05:54:52 GMT