"Sat, 03 Jan 1970 09:14:41"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700103
Only TIME
09:14:41
General datetime
1970-01-03 09:14:41Z
For Database
1970-01-03 09:14:41
For HTTP1.1
Sat, 03 Jan 1970 09:14:41 GMT