"Sat, 10 Jan 1970 09:23:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700110
Only TIME
09:23:14
General datetime
1970-01-10 09:23:14Z
For Database
1970-01-10 09:23:14
For HTTP1.1
Sat, 10 Jan 1970 09:23:14 GMT