"Fri, 30 Jan 1970 23:30:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700130
Only TIME
23:30:48
General datetime
1970-01-30 23:30:48Z
For Database
1970-01-30 23:30:48
For HTTP1.1
Fri, 30 Jan 1970 23:30:48 GMT