"Fri, 23 Jan 1970 12:26:02"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700123
Only TIME
12:26:02
General datetime
1970-01-23 12:26:02Z
For Database
1970-01-23 12:26:02
For HTTP1.1
Fri, 23 Jan 1970 12:26:02 GMT