"Thu, 08 Jan 1970 21:11:32"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
21:11:32
General datetime
1970-01-08 21:11:32Z
For Database
1970-01-08 21:11:32
For HTTP1.1
Thu, 08 Jan 1970 21:11:32 GMT