"Thu, 22 Jan 1970 18:12:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700122
Only TIME
18:12:14
General datetime
1970-01-22 18:12:14Z
For Database
1970-01-22 18:12:14
For HTTP1.1
Thu, 22 Jan 1970 18:12:14 GMT