DS1 napped until he was 18 months old, then stopped of his own accord (so I only actually had a year of him sleeping during the day as he didn't sleep until he was 6 months old
DS2 still had a regular nap until he was just over 3yrs old - still naps now sometimes and he's nearly 5
DS3 is 16 months and has 1/2-3hrs just after lunch.......