I didn't actually enter this into a gteway to test it, but typed it off the top of my head, so check my work...
Saturday or Sunday
1:( DateTime.Time.Hour less than or equals 8
2: OR (DateTime.Time.Hour greater than or equals 12
3: AND DateTime.Time.Hour less than 14)
4: OR (DateTime.Time.Hour greater than or equals 17
5: AND DateTime.Time.Minute greater than or equals 30)
6: OR DateTime.Time.Hour greater than or equals 18
7: OR (DateTime.Date.WeekDayNumber equals 0
8: OR DateTime.Date.WeekDayNumber equals 6) )
9: AND URL.Category at least one in list "Allowed Non-work hours"
Thanks for the prompt reply Erik, will try this Monday and report back.
Thanks again Erik, didn't use quite the same sytax but pointed me in the right direction, I decided to set it up to Block during core business hours