"Fri, 09 Jan 1970 19:45:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700109
Only TIME
19:45:19
General datetime
1970-01-09 19:45:19Z
For Database
1970-01-09 19:45:19
For HTTP1.1
Fri, 09 Jan 1970 19:45:19 GMT