"Fri, 30 Jan 1970 14:27:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700130
Only TIME
14:27:20
General datetime
1970-01-30 14:27:20Z
For Database
1970-01-30 14:27:20
For HTTP1.1
Fri, 30 Jan 1970 14:27:20 GMT