I would also imagine that:
A) You'll get tired of moving around the glorified Scrabble tiles after about two months
B) You'll be screwed in March, when you can't find numbers 29, 30, and 31.
C) You'll have to hide it when company comes, rather than explain why it still says December, even in June.
LIGHTHOUSE PERPETUAL CALENDAR will guide you through the days and months just as lighthouses have always guided seafarers. Wooden wall plaque features a handsome lighthouse replica in raised detail. Comes with interchangeable months of the year and 31 day squares that easily slide in and out to keep your calendar current—it never goes out of date! Includes hang hooks. 14-1/2" L x 7". $12.98