"Mon, 09 Feb 1970 18:13:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700209
Only TIME
18:13:10
General datetime
1970-02-09 18:13:10Z
For Database
1970-02-09 18:13:10
For HTTP1.1
Mon, 09 Feb 1970 18:13:10 GMT