"Wed, 04 Feb 1970 05:32:47"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700204
Only TIME
05:32:47
General datetime
1970-02-04 05:32:47Z
For Database
1970-02-04 05:32:47
For HTTP1.1
Wed, 04 Feb 1970 05:32:47 GMT