Happy Birthday Calendar This Cheerful birthday calendar in A4 format is already an eye-catcher without all the birthdays in it. Artist Danielle Ducheine of Puk Art. has published this beautiful birthday calendar in-house and of high quality. After a successful first edition, we proudly present the second edition of the Happy B-Day-Calendar. A number of adjustments have been made to this updated Happy Birthday Calendar to make the calendar even more user-friendly. For colorful young and old! This art birthday calendar is A-4 size and all twelve months feature various colorful images from the work of Puk Art. The calendar has a ring binder system so you can easily change the months. To hang in the smallest room in the house, the kitchen or children's room or in the office. One thing is certain, it will make you happy.