National Pineapple Upside Down Cake Day 5 events found. Views Navigation Event Views Navigation Summary Month Day Photo Week Today Upcoming Upcoming Select date. Apr 2026 Mon 20 All day Event Series National Pineapple Upside Down Cake Day Apr 2027 Tue 20 All day Event Series National Pineapple Upside Down Cake Day Apr 2028 Thu 20 All day Event Series National Pineapple Upside Down Cake Day Apr 2029 Fri 20 All day Event Series National Pineapple Upside Down Cake Day Apr 2030 Sat 20 All day Event Series National Pineapple Upside Down Cake Day Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file