"Mon, 23 Feb 1970 00:53:25"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700223
Only TIME
00:53:25
General datetime
1970-02-23 00:53:25Z
For Database
1970-02-23 00:53:25
For HTTP1.1
Mon, 23 Feb 1970 00:53:25 GMT