"Thu, 05 Feb 1970 00:20:25"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700205
Only TIME
00:20:25
General datetime
1970-02-05 00:20:25Z
For Database
1970-02-05 00:20:25
For HTTP1.1
Thu, 05 Feb 1970 00:20:25 GMT