"Tue, 27 Jan 1970 11:21:25"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700127
Only TIME
11:21:25
General datetime
1970-01-27 11:21:25Z
For Database
1970-01-27 11:21:25
For HTTP1.1
Tue, 27 Jan 1970 11:21:25 GMT