"Mon, 09 Feb 1970 15:13:05"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700209
Only TIME
15:13:05
General datetime
1970-02-09 15:13:05Z
For Database
1970-02-09 15:13:05
For HTTP1.1
Mon, 09 Feb 1970 15:13:05 GMT