"Mon, 09 Feb 1970 23:32:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700209
Only TIME
23:32:39
General datetime
1970-02-09 23:32:39Z
For Database
1970-02-09 23:32:39
For HTTP1.1
Mon, 09 Feb 1970 23:32:39 GMT