"Tue, 27 Jan 1970 23:33:06"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700127
Only TIME
23:33:06
General datetime
1970-01-27 23:33:06Z
For Database
1970-01-27 23:33:06
For HTTP1.1
Tue, 27 Jan 1970 23:33:06 GMT