"Thu, 12 Feb 1970 23:32:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700212
Only TIME
23:32:23
General datetime
1970-02-12 23:32:23Z
For Database
1970-02-12 23:32:23
For HTTP1.1
Thu, 12 Feb 1970 23:32:23 GMT