We need to see what values you've put in the Effort Conversion Factor fields. Bring up the Project inspector (cmd-4) and click on the Formatting tab (a display with a checkbox in it). The numbers listed for Effort Conversion Factor are used to convert effort values (kept internally in seconds) into more human friendly values (like 1d, 2h, etc.) If you have set those numbers to be lower than the project work week, you can end up with results that may not make sense when compared with a calendar. If you have your project work week set to 168 hours per week, for example, but the ECF still says 40 hours is a week, there's going to be quite a discrepancy.
Have a look at
this thread and see if it doesn't make more sense. Do report back if your ECF values seem correct and match the length of your project work days; maybe there is something else going on.
Here's another question for you: you say your task starts 11/24 @ 6PM and goes until 12/1 @ 2AM. Do you see this task as actually occupying every single hour between those two endpoints, or do you see some worker working on this task for each of the working hours that happens to be on the calendar between the endpoints? Does that distinction make sense to you?