"Mon, 09 Feb 1970 07:54:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700209
Only TIME
07:54:45
General datetime
1970-02-09 07:54:45Z
For Database
1970-02-09 07:54:45
For HTTP1.1
Mon, 09 Feb 1970 07:54:45 GMT