Pictures of Jesus 12-Month perpetual birthday calendar book for birthdays, anniversaries, and important dates. Our perpetual birthday calendars measure 11x8.51 in size featuring one page for each month. Use it to track birthdays, anniversaries, special days and holidays. Hardbound book is perfect for home or office as a planner, desk calendar, diary, date keeper, or appointment calendar. Makes a unique Christmas, birthday, New Years, or graduation gift for family and friends.