"Mon, 16 Feb 1970 15:05:53"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700216
Only TIME
15:05:53
General datetime
1970-02-16 15:05:53Z
For Database
1970-02-16 15:05:53
For HTTP1.1
Mon, 16 Feb 1970 15:05:53 GMT