"Thu, 01 Jan 1970 09:17:33"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700101
Only TIME
09:17:33
General datetime
1970-01-01 09:17:33Z
For Database
1970-01-01 09:17:33
For HTTP1.1
Thu, 01 Jan 1970 09:17:33 GMT