"Sat, 03 Jan 1970 09:14:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700103
Only TIME
09:14:10
General datetime
1970-01-03 09:14:10Z
For Database
1970-01-03 09:14:10
For HTTP1.1
Sat, 03 Jan 1970 09:14:10 GMT