17hours. Too bad that didn't count the hour I was on the road to get to n from work as well. Did that twice. The second time I didn't get any sleep before work, that or if I went to sleep, there was no way I was going to wake up. I was dreaming on my way home from work with my eyes open, almost hit a parked unmarked... I had alot of fun being assistant project manager during that project though, wish I was busy that much all the time.