"Thu, 08 Jan 1970 14:29:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
14:29:12
General datetime
1970-01-08 14:29:12Z
For Database
1970-01-08 14:29:12
For HTTP1.1
Thu, 08 Jan 1970 14:29:12 GMT