"Fri, 13 Feb 1970 03:26:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700213
Only TIME
03:26:14
General datetime
1970-02-13 03:26:14Z
For Database
1970-02-13 03:26:14
For HTTP1.1
Fri, 13 Feb 1970 03:26:14 GMT