Arbor Day 2024 Date. Arbor day is celebrated on the last friday in april, although some states observe it on dates that better coincide with the local area’s planting times. National arbor day is on april 26, 2024.
However, states are free to choose their own commemorative dates considering the best environment for trees to prosper. Arbor day is celebrated on the last friday in april, although some states observe it on dates that better coincide with the local area’s planting times.