18 month old nursery program hours and figuring out nap

Our son is 1 and will turn 18 months around Sept. We are interested in a half day toddler program at that point but the hours are 12-2:30. I'm assuming he will be on one nap at that point..but if his wake time is 730- is that even possible to fit in the first nap before the program starts at noon? I'm looking into other programs that have morning openings so perhaps this afternoon one wouldn't be possible if our goal is to have him nap at home? For more context- as of now- wake time is 730 and bedtime is 815-830ish. We like this bedtime because it gives us time with him after we return from work around 4. Thank you!