"Thu, 22 Jan 1970 23:33:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700122
Only TIME
23:33:03
General datetime
1970-01-22 23:33:03Z
For Database
1970-01-22 23:33:03
For HTTP1.1
Thu, 22 Jan 1970 23:33:03 GMT