"Fri, 23 Jan 1970 19:45:26"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700123
Only TIME
19:45:26
General datetime
1970-01-23 19:45:26Z
For Database
1970-01-23 19:45:26
For HTTP1.1
Fri, 23 Jan 1970 19:45:26 GMT