"Tue, 20 Jan 1970 09:22:25"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700120
Only TIME
09:22:25
General datetime
1970-01-20 09:22:25Z
For Database
1970-01-20 09:22:25
For HTTP1.1
Tue, 20 Jan 1970 09:22:25 GMT