Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globally through earthday.org including 1 billion people in more than 193 countries.
Earth Day (International observance) and its related observance: International Mother Earth Day
Earth Day (International observance) and its related observance: International Mother Earth Day
On April 22, in the year 0, Earth Day (International observance) and its related observance: International Mother Earth Day. This event is recorded as a Holidays event in the history of April 22, one of 297 recorded events on this date across all of history.
Key Facts
- This event took place on April 22, 0 (AD era).
- It is categorised as a Holidays event in recorded history.
- Referenced in 3 Wikipedia articles.
- Wikipedia source last updated on 16 April 2026.
On This Date in History 297
This article draws on content from Wikipedia, available under CC BY-SA 4.0.
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