April 1977
No. Su Mo Tu We Th Fr Sa
14 27 28 29 30 31 1 2
15 3 4 5 6 7 8 9
16 10 11 12 13 14 15 16
17 17 18 19 20 21 22 23
18 24 25 26 27 28 29 30
  • In 1977 year Arbor Day fell on
    fifth Friday of April

Arbor Day dates in the following years:

Su Mo Tu We Th Fr Sa
Apr. 2025
25
Apr. 2026
24
Apr. 2027
30
Apr. 2028
28
Apr. 2029
27
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 1977

Friday, April 29 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.