"Fri, 02 Jan 1970 10:03:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700102
Only TIME
10:03:56
General datetime
1970-01-02 10:03:56Z
For Database
1970-01-02 10:03:56
For HTTP1.1
Fri, 02 Jan 1970 10:03:56 GMT