The weekend is usually where you can find extra time to get some writing done on your NaNo draft.
Just don't forget to ignore some of the real-world necessities like:
1) Feed your cats
2) Clean up after your cats
3) Do laundry
4) Fold laundry before cats get into it
5) Feed cats again
6) Call parents to let them know you haven't disappeared into the swamps
8) Feed yourself
9) Don't lose track of anything you might forget
10) Feed cats one more time
You can still fit in a few hours of writing in all that. Somewhere.