Holiday / observanceMarch 21

Arbor Day

Arbor Day (Lesotho)

Everything on March 21Original source

In context

When
March 21
Category
Holiday / observanceA holiday, feast day, awareness day or national day observed every year on this date.
Recorded from
Wikipedia “On this day” feed

What happened

Arbor Day is a secular day of observance in which individuals and groups are encouraged to plant trees. Today, many countries observe such a holiday. Though usually observed in the spring, the date varies, depending on climate and suitable planting season.

March 21 through the years

Other entries on the same calendar day, in order.

  1. 1989Transbrasil Flight 801
  2. 1990Namibia
  3. 1994United Nations Framework Convention on Climate Change
  4. 1999Bertrand Piccard
  5. 2000Pope John Paul II
  6. 2006Jack Dorsey
  7. 2006Social media
  8. 2006Phra Phrom
  9. 20192019 Xiangshui chemical plant explosion
  10. 2022China Eastern Airlines Flight 5735

Sources

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“Arbor Day”, What's On This Date, https://whatsonthisdate.com/app/event/arbor-day-march-21, accessed October 24, 2026.

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