Arbor Day Holiday 2025. Calendar for the whole year, calendar for any month, lunar calendar, printable calendar. Arbor day is friday, april 26, 2025!
National arbor day is always celebrated on the last friday in april, but many states observe arbor day on different. Since 1976, the arbor day foundation’s tree city usa program has recognized and supported the cities and leaders who create places to play, room to breathe, and beauty on every block.