"Fri, 09 Jan 1970 05:47:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700109
Only TIME
05:47:31
General datetime
1970-01-09 05:47:31Z
For Database
1970-01-09 05:47:31
For HTTP1.1
Fri, 09 Jan 1970 05:47:31 GMT