"Thu, 08 Jan 1970 14:35:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
14:35:14
General datetime
1970-01-08 14:35:14Z
For Database
1970-01-08 14:35:14
For HTTP1.1
Thu, 08 Jan 1970 14:35:14 GMT