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