April 2021
No. Su Mo Tu We Th Fr Sa
14 28 29 30 31 1 2 3
15 4 5 6 7 8 9 10
16 11 12 13 14 15 16 17
17 18 19 20 21 22 23 24
18 25 26 27 28 29 30 1
  • In 2021 year Arbor Day falls on
    fifth Friday of April

Arbor Day dates in the following years:

Su Mo Tu We Th Fr Sa
Apr. 2022
29
Apr. 2023
28
Apr. 2024
26
Apr. 2025
25
Apr. 2026
24
The dates the holiday is observed are marked with a dotted line (applies to federal holidays). Date calculations are based on your computer's time.

Arbor Day 2021

Friday, April 30 Planting a tree Photo by Johann Siemens

Arbor Day is a holiday celebrated every year on the second Sunday in April. It was initiated by the Secretary of Agriculture of the United States, Julius Sterling Morton, who on 10 April 1872 appealed to Americans to plant a tree if they have such a possibility. Morton's countrymen were keen to adopt this idea and over one million trees were planted on this day. Since 1915, the Arbor Tree is also celebrated in other countries of Europe.