When DD was at that age and today (just turned 3 and still naps), her days were/are at least 13.5, closer to 14 hours on a 2 hour nap. I know her days should be shorter, but with our family's schedule (long work hours, long commutes, older brother's activities, etc. ), that wasn't possible. She seems to cope just fine and may nap a touch longer on weekends at home to make up.