"Fri, 09 Jan 1970 14:30:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700109
Only TIME
14:30:14
General datetime
1970-01-09 14:30:14Z
For Database
1970-01-09 14:30:14
For HTTP1.1
Fri, 09 Jan 1970 14:30:14 GMT