When do challenges reset?

I’m attempting to do the Maryland challenge. When I press “BEGIN” it pops up with “You cannot attempt more than 3 challenges per day for this event. Please check back later.”

I last did the challenges last night either at 8pm or 9pm ET. It’s 7:11pm ET right now. Are challenges locked for a full 24 hours after you do them? If so, please change that to reset at like 4am or something like other games that have been doing daily quests/challenges for a long time.