"Thu, 22 Jan 1970 05:33:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700122
Only TIME
05:33:20
General datetime
1970-01-22 05:33:20Z
For Database
1970-01-22 05:33:20
For HTTP1.1
Thu, 22 Jan 1970 05:33:20 GMT