"Mon, 09 Feb 1970 00:53:02"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700209
Only TIME
00:53:02
General datetime
1970-02-09 00:53:02Z
For Database
1970-02-09 00:53:02
For HTTP1.1
Mon, 09 Feb 1970 00:53:02 GMT