"Mon, 05 Jan 1970 09:14:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700105
Only TIME
09:14:37
General datetime
1970-01-05 09:14:37Z
For Database
1970-01-05 09:14:37
For HTTP1.1
Mon, 05 Jan 1970 09:14:37 GMT