"Fri, 02 Jan 1970 03:03:49"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700102
Only TIME
03:03:49
General datetime
1970-01-02 03:03:49Z
For Database
1970-01-02 03:03:49
For HTTP1.1
Fri, 02 Jan 1970 03:03:49 GMT