Mine turns 9 months in a week. In the last month, her A time in the morning is around 3.5 hr. If she had EMW and went back to sleep for a short while before I wake her at 7.30am, she will need her morn nap slightly earlier.
She's NEVER done 2 or more good naps, since she was a wee little thing, we found out she functions much better on a short (1/2 hr to 45 min) morning nap and then a long (2-3 hr) afternoon nap. If I were to let her have a long morning one, she will only nap 45 min in the afternoon (maybe UT?) and then get OT at bedtime!
So with a short morning nap, her next A time is about 2.75 to 3 hrs.