"Wed, 04 Feb 1970 04:34:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700204
Only TIME
04:34:03
General datetime
1970-02-04 04:34:03Z
For Database
1970-02-04 04:34:03
For HTTP1.1
Wed, 04 Feb 1970 04:34:03 GMT