I've noticed Topsy-Turvy pop up as a holiday/festivity/occasion-of-some-sort under "time" for a little while now, and was hoping we could learn more about it! (Currently what comes to mind is the song from Disney's The Hunchback of Notre Dame... hahaha.)
And if I am allowed to broaden the question further, are there other major occasions that will show up on "time" between Topsy-Turvy and Solitary/New Year that our characters should be familiar with, given they originate from the Sirdabi Caliphate?