"Fri, 06 Feb 1970 07:13:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700206
Only TIME
07:13:36
General datetime
1970-02-06 07:13:36Z
For Database
1970-02-06 07:13:36
For HTTP1.1
Fri, 06 Feb 1970 07:13:36 GMT