I agree with Play and Learn that 12 months + do not have 2 naps.
I have 3 x 15 month olds (one is my own) and 1x 2.5 yr old. We have lunch at 11:30 and by 12:15 all of them are sleeping until 2:30.
I sometimes hear the older one chatting in her bed, that is fine, but nobody comes out of their rooms until 2:30. This works well for everyone and we have happy, energetic kids to play with outside in the afternoon.
It did take some getting used to for one of the younger ones, who was used to having a couple naps per day, but soon enough everyone is on the same schedule here!
It is a necessary break for me to clean up, out my feet up, and recharge my batteries.