"Fri, 09 Jan 1970 11:04:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700109
Only TIME
11:04:31
General datetime
1970-01-09 11:04:31Z
For Database
1970-01-09 11:04:31
For HTTP1.1
Fri, 09 Jan 1970 11:04:31 GMT