"Mon, 05 Jan 1970 22:42:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700105
Only TIME
22:42:12
General datetime
1970-01-05 22:42:12Z
For Database
1970-01-05 22:42:12
For HTTP1.1
Mon, 05 Jan 1970 22:42:12 GMT