Actually, you want to re-coat BEFORE 24 hrs, rather than wait 24hrs. If you read the surface coating instructions you will see that it is safe AFTER 24hrs to apply a wax to the coating (which references the curing time). I do remember a conversation where it was said that full cure time is 30 days but there does not seem to have available research to back this up.
Personally I would coat the car, go eat something, and reapply within 12 hrs (before you start having too many flying "things" to contend with cleaning before your second application)