"Mon, 09 Feb 1970 00:19:41"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700209
Only TIME
00:19:41
General datetime
1970-02-09 00:19:41Z
For Database
1970-02-09 00:19:41
For HTTP1.1
Mon, 09 Feb 1970 00:19:41 GMT