"Fri, 06 Feb 1970 19:39:32"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700206
Only TIME
19:39:32
General datetime
1970-02-06 19:39:32Z
For Database
1970-02-06 19:39:32
For HTTP1.1
Fri, 06 Feb 1970 19:39:32 GMT