"Fri, 30 Jan 1970 21:44:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700130
Only TIME
21:44:56
General datetime
1970-01-30 21:44:56Z
For Database
1970-01-30 21:44:56
For HTTP1.1
Fri, 30 Jan 1970 21:44:56 GMT