How long in minutes or hours have you ever sat on a chair?

Longest was on an Air Canada flight from England to Vancouver,about ten hours,minus a toilet break!

I cannot sit still for more than 10 minutes. :)

Around 12 hours

10 hours give or take

Longer than I wanted

like 7 hours

The two longest, from Atlanta, GA to Paris (France) was about 8 hrs.
From SF, CA to London was about 12.