That would be 6pm EDT which would basically screw most people who work 9-5 jobs in the majority of the US. I don’t know what percentage of the userbase is in that boat but I would say it’s a decent percentage.

If a static time is used it should be convenient for the vast majority of the userbase which is currently based in the US and Canada. The other option is a floating time that shifts around based on some sort of random number generator. That way you might have a great time one week and a horrible time another week. The only thing I think you would want to avoid is having domination too close to rollover.