I did not know the specifics until I looked at practice ice registration forms at my rink.
Sunday 10:45am to 1:45pm, or Saturday 1pm to 4:15pm dance ice for 19.50 preregistered, 22.50 walk on. Wow what a deal, club dance ice at nearby rink costs 20 for less than half the time on Monday nights.
There are also high moves, low moves, and open moves. Mind you, we are a mostly recreational ISI rink, but locating in the rink saturated Chicago suburbs helps.