"Mon, 12 Jan 1970 05:48:08"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700112
Only TIME
05:48:08
General datetime
1970-01-12 05:48:08Z
For Database
1970-01-12 05:48:08
For HTTP1.1
Mon, 12 Jan 1970 05:48:08 GMT