DigiNepal · festivals
Earth Day (पृथ्वी दिवस (Nepali)). Region: Worldwide. Tradition: International environmental observance. Calendar: Gregorian (22 April). Dates: Worldwide 2026: Wednesday 22 April 2026 [computed]; Worldwide 2027: Thursday 22 April 2027 [computed]; Worldwide 2028: Saturday 22 April 2028 [computed]. History and significance: Earth Day was first held on 22 April 1970 in the United States as a nationwide day of environmental teach ins, and became a global event in 1990. The United Nations calls it International Mother Earth Day. Key rituals and foods: Tree planting, clean up campaigns and environmental awareness events. Date basis: official = matches a government gazetted holiday list; computed = calculated from the calendar system (tithi astronomy with skyfield and JPL DE421, Hijri Umm al-Qura, Chinese, Korean and Hebrew calendar libraries, or the fixed rule); expected = Umm al-Qura projection pending moon sighting. Sources: Wikipedia and Wikidata (CC BY-SA / CC0) and national holiday rules, summarised in our own words.