"Tue, 27 Jan 1970 11:21:24"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700127
Only TIME
11:21:24
General datetime
1970-01-27 11:21:24Z
For Database
1970-01-27 11:21:24
For HTTP1.1
Tue, 27 Jan 1970 11:21:24 GMT