"Fri, 09 Jan 1970 14:07:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700109
Only TIME
14:07:15
General datetime
1970-01-09 14:07:15Z
For Database
1970-01-09 14:07:15
For HTTP1.1
Fri, 09 Jan 1970 14:07:15 GMT