What box/book am I getting? When do you switch from one month to the next?Updated a month ago

Our switchover time is the 19th/20th of each month.

If you order before Midnight EST on the 19th you will get the current month's box (ie Jan). If you order after 12:01 EST on the 20th, you will get the next month's box (ie: Feb).

To be safe, purchase BEFORE the 19th for the current month's box and AFTER the 20th for the next month's box. This will make sure your purchase doesn't get caught up on the cusp of the switchover.