Travel The World Perpetual Calendar Birthday Anniversary Family Date Annual Reminders 5.5" x 11.5" The Travel the World Perpetual Calendar is ideal for recording birthdays, anniversaries, and other special days. Size: 5.5 x 11.5 in. portrait Opens to 5.5 x 23 in. 12-month non-dated perpetual calendar features 12 parks Includes brief history of park and poster