M.A.
My son is 11 1/2 months old. He just recently started taking only one nap per day instead of two. As far as whether it is in the morning or afternoon, it is dependent on how he slept during the night, what time he woke up, and how his mood is. Most often he takes his nap in the afternoon though, sleeping for 2 1/2 hours starting anytime between 1 - 3:30p.
Our daily schedule, roughly, can be broken down like this -
7 - 7:30 wake up and have breakfast
end of breakfast - 10:30 play
10:30 milk (this is when he falls asleep if he needs to nap in the morning, will only sleep for 1 - 1 1/2 hours)
10:45 - 11:30 if not sleeping, more play time
11:30 - take the dogs for a walk
12:30 - lunch
1 - 3 - read books, independent exploring/playing, and/or start naptime
3 - 5:30 if not napping, having an afternoon snack and playing
5:30 dinner
6 - 7 play
7 my kid watches wheel of fortune obsessively... sits in front of the tv, claps and laughs hysterically. since this is the only time he watches tv, i am ok with it!
7:30 bathtime
7:50 - 8 pjs, night snack, milk and story time
8 sleep!