"Fri, 23 Jan 1970 07:41:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700123
Only TIME
07:41:42
General datetime
1970-01-23 07:41:42Z
For Database
1970-01-23 07:41:42
For HTTP1.1
Fri, 23 Jan 1970 07:41:42 GMT