The Order of the Phoenix clue is up on the Pottermore site for Day 5 registration! So hurry up and run over to the site to grab your spot!!!

The clue is as follows: What is the house number of the Headquarters for The Order of the Phoenix in Grimmauld Place?
Multiply this number by 21.

I will update this post when spots are full. PLEASE do not post the answer in the comments (after registration is closed for the day you can post it though)

UPDATE: Registration is now closed!

Filed Under: Pottermore