There's 3 days in the month (Sunday, Monday, Tuesday) where it's at 55k. Rest is above that with the max at 78k for the month. Technically once upon a time it was a Category 7 which meant 50k off peak, 60k standard, and 70k peak rate.

I assume there's no way to set an ExpertFlyer-style alert for this, is there... I saw recently there's a service that does the same for Global Entry appointments and charges $29. Seems like a pretty good business model