"Thu, 05 Feb 1970 07:54:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700205
Only TIME
07:54:44
General datetime
1970-02-05 07:54:44Z
For Database
1970-02-05 07:54:44
For HTTP1.1
Thu, 05 Feb 1970 07:54:44 GMT