"Sat, 10 Jan 1970 14:32:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700110
Only TIME
14:32:17
General datetime
1970-01-10 14:32:17Z
For Database
1970-01-10 14:32:17
For HTTP1.1
Sat, 10 Jan 1970 14:32:17 GMT