"Fri, 30 Jan 1970 12:54:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700130
Only TIME
12:54:44
General datetime
1970-01-30 12:54:44Z
For Database
1970-01-30 12:54:44
For HTTP1.1
Fri, 30 Jan 1970 12:54:44 GMT