It depends. Freeskate is usually from 6-8 am. But that is for people currently in the figure skating program. The last time that i am aware of is usually a public skate which ends at 11pm the latest. In the end you really should just go to their website to check.
On the web page, there is a public skating schedule that gives the times each day that you can skate
Thanks! Your answer is awaiting moderation.