"Fri, 09 Jan 1970 14:18:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700109
Only TIME
14:18:45
General datetime
1970-01-09 14:18:45Z
For Database
1970-01-09 14:18:45
For HTTP1.1
Fri, 09 Jan 1970 14:18:45 GMT