"Mon, 05 Jan 1970 03:46:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700105
Only TIME
03:46:12
General datetime
1970-01-05 03:46:12Z
For Database
1970-01-05 03:46:12
For HTTP1.1
Mon, 05 Jan 1970 03:46:12 GMT