Source-backedRule Based AnnualIn-depth guide
National Prairie Day
The Missouri Prairie Foundation says it founded National Prairie Day in 2016 and observes it annually on the first Saturday in June; its current 2026 programme identifies 6 June 2026.
Topic facet
Nature Environment observances
Nature, ecosystems, environmental awareness and conservation.
136 observances
All observances
Source-backedRule Based AnnualIn-depth guide
National Public Gardens Day
The American Public Gardens Association documents National Public Gardens Day as an annual tradition on the Friday preceding Mother’s Day weekend and records its inauguration in 2009.
Source-backedRule Based AnnualIn-depth guide
National Public Lands Day
National Park Service current 2026 observance page; led by NEEF in partnership with NPS and federal agencies
Source-backedRule Based AnnualIn-depth guide
National Start Seeing Monarchs Day
The City of Hoboken recognized 2 May 2026 as National Start Seeing Monarchs Day, while the current observance registry gives the reusable rule as the first Saturday of May.
Source-backedRule Based AnnualIn-depth guide
National Trails Day®
American Hiking Society says it conceived National Trails Day in 1991 and launched the first event on 5 June 1993; current organizer material keeps the recurrence on the first Saturday in J…
Source-backedRule Based AnnualIn-depth guide
National Tree Day
Planet Ark says Australia’s National Tree Day began in 1996 and is held on the last Sunday in July; its official materials also document the program’s founding history and locally adaptable…
Source-backedFixed AnnualIn-depth guide
National Wattle Day
The Australian Government states that 1 September is National Wattle Day and records that the observance was officially proclaimed on 23 June 1992; current 2026 government material continue…
Source-backedFixed AnnualIn-depth guide
National Wildlife Day
Creator Colleen Paige’s current site identifies her as founder and lists National Wildlife Day on September 4. Sacramento Zoo corroborates a 2005 founding and separately notes February 22 u…
Source-backedFixed AnnualIn-depth guide
Nature Photography Day
The North American Nature Photography Association states that Nature Photography Day is June 15 and traces the initiative to its first celebration in 2006.
Source-backedEdition SpecificIn-depth guide
Perseid meteor shower peak
NASA identifies the 2026 Perseid meteor shower peak around the night of 12–13 August.
Source-backedRule Based AnnualIn-depth guide
Save the Florida Panther Day
Florida Statutes designate the third Saturday in March of each year as Save the Florida Panther Day; the U.S. Fish and Wildlife Service also promoted the 21 March 2026 observance.
Source-backedFixed AnnualIn-depth guide
Save The Frogs Day
SAVE THE FROGS! states that Save The Frogs Day takes place on April 28 every year and documents the 18th annual event on April 28, 2026.
Source-backedRule Based AnnualIn-depth guide
Save the Koala Day
The Australian Koala Foundation lists Save the Koala Day as the last Friday in September and identifies September 25 for the 2026 observance.
Source-backedEdition SpecificIn-depth guide
September equinox (Northern Hemisphere fall equinox)
The U.S. Naval Observatory calculates the September equinox as an astronomical instant: 23 September 2026 at 00:05 UT and 23 September 2027 at 06:02 UT. The Northern Hemisphere calls this t…
Source-backedFixed AnnualIn-depth guide
Shark Awareness Day
NOAA Fisheries and current WWF UK material identify July 14 as Shark Awareness Day; Shark Trust material supports the conservation-awareness identity but is not used to infer a creator or c…
Source-backedFixed AnnualIn-depth guide
Take Your Houseplants for a Walk Day
Wellcat’s creator biography explicitly names Take Your Houseplants For A Walk Day among Tom Roy’s created holidays and the Wellcat calendar lists July 27; Community College of Denver indepe…
Source-backedFixed AnnualIn-depth guide
Wild Koala Day
Wild Koala Day first-party material fixes the observance on May 3, documents its beginning in 2016 through a network of koala conservation groups, and continues to organize current annual p…
Source-backedFixed AnnualIn-depth guide
World Animal Day
World Animal Day first-party material fixes the observance on October 4, attributes the idea to Heinrich Zimmermann, documents the first celebration on 24 March 1925 and the later move to O…
Source-backedFixed AnnualIn-depth guide
World Animal Reiki Day
Shelter Animal Reiki Association states that World Animal Reiki Day was created by Kathleen Prasad, is organized by SARA volunteer members, and is observed on February 5 in honor of the bir…
Source-backedFixed AnnualIn-depth guide
World Bamboo Day
World Bamboo Organization first-party pages verify September 18, state that WBO created World Bamboo Day in 2009, place the first celebration at the 8th World Bamboo Congress in Bangkok, an…
Source-backedFixed AnnualIn-depth guide
World Bee Day
A/RES/72/211
Source-backedFixed AnnualIn-depth guide
World Bonobo Day
Friends of Bonobos documents Ashley Stone/The Bonobo Project as the origin force behind World Bonobo Day, the 2021 merger into Friends of Bonobos, February 14 recurrence and continuing camp…
Source-backedFixed AnnualIn-depth guide
World Cleanup Day
A/RES/78/122
Source-backedFixed AnnualIn-depth guide
World Coconut Day
International Coconut Community material states that 2 September is World Coconut Day and commemorates the 1969 establishment of the ICC, formerly APCC; public-institution material document…
Source-backedFixed AnnualIn-depth guide
World Cotton Day
A/RES/75/318
Source-backedFixed AnnualIn-depth guide
World Curlew Day
Curlew Action verifies April 21, Mary Colwell’s origin role, explicit date rationale and continuing annual stewardship; because first-party pages use 2017 founding language and 2018 “got go…
Source-backedFixed AnnualIn-depth guide
World Day for Farmed Animals
FARM’s organizational history says World Farm Animals Day began in 1983 and is now called World Day for Farmed Animals; FARM reporting identifies the annual observance date as 2 October.
Source-backedFixed AnnualIn-depth guide
World Day for Glaciers
A/RES/77/158
Source-backedFixed AnnualIn-depth guide
World Day to Combat Desertification and Drought
A/RES/49/115
Source-backedFixed AnnualIn-depth guide
World Elephant Day
World Elephant Day first-party history identifies an inaugural August 12, 2012 launch, Patricia Sims and the Elephant Reintroduction Foundation as co-founders, and continuing campaign leade…
Source-backedFixed AnnualIn-depth guide
World Environment Day
A/RES/2994 (XXVII)
Source-backedFixed AnnualIn-depth guide
World Frog Day
The current World Frog Day platform says the observance is held every year on 20 March and is organized by SAVE THE FROGS!; its own history notes earlier informal use of the date.
Source-backedFixed AnnualIn-depth guide
World Giraffe Day
The Giraffe Conservation Foundation states that it initiated World Giraffe Day, holds it annually on 21 June, and chose the solstice date to pair the tallest animal with the longest day or…
Source-backedFixed AnnualIn-depth guide
World Green Roof Day
The official World Green Roof Day site says Dusty Gedge and Chris Bridgman started the June 6 observance in 2020; Green Roof Organisation independently promotes the current event.
Source-backedFixed AnnualIn-depth guide
World Hippo Day
Multiple established zoological institutions independently use February 15 for World Hippo Day, including current and multi-year observance by Zoos SA and Cincinnati Zoo; the original creat…
Source-backedFixed AnnualIn-depth guide
World Horse Day
A/RES/79/291
Source-backedFixed AnnualIn-depth guide
World Lake Day
A/RES/79/142
Source-backedRule Based AnnualIn-depth guide
World Lemur Day
Lemur Conservation Network verifies the last-Friday-in-October World Lemur Day rule and 30 October 2026. Its history traces the linked World Lemur Festival to a 2014 Antananarivo event orga…
Source-backedFixed AnnualIn-depth guide
World Lion Day
Current conservation sources verify August 10 recurrence, while World Animal Protection and National Geographic attribute the 2013 founding to Dereck and Beverly Joubert.
Source-backedFixed AnnualIn-depth guide
World Lizard Day
Akron Zoo states that World Lizard Day is celebrated each year on August 14, and Utah’s Hogle Zoo independently lists World Lizard Day on August 14 in its current animal-highlight calendar.…
Source-backedFixed AnnualIn-depth guide
World Meteorological Day
WMO/EC-XII/Res.6
Source-backedRule Based AnnualIn-depth guide
World Migratory Bird Day
UNEP / CMS / AEWA partner campaign
Source-backedRule Based AnnualIn-depth guide
World Numbat Day
Project Numbat’s archive identifies 7 November 2015 as the inaugural World Numbat Day and establishes the first Saturday of November recurrence; current Project Numbat material confirms ong…
Source-backedFixed AnnualIn-depth guide
World Oceans Day
A/RES/63/111
Source-backedFixed AnnualIn-depth guide
World Octopus Day
TONMO states that it initiated World Octopus Day; its preserved 2007 community thread documents the lineage that evolved into Cephalopod Awareness Days and October 8 World Octopus Day.
Source-backedFixed AnnualIn-depth guide
World Olive Tree Day
Proclaimed at UNESCO’s 40th General Conference (2019)
Source-backedRule Based AnnualIn-depth guide
World Pangolin Day
The IUCN SSC Pangolin Specialist Group says World Pangolin Day is celebrated on the third Saturday of February and was founded in 2012 by Rhishja Cota.
Source-backedFixed AnnualIn-depth guide
World Parrot Day
World Parrot Trust states that World Parrot Day began in 2004, is observed each May 31, and continues as a WPT-led global conservation and welfare campaign.
Source-backedFixed AnnualIn-depth guide
World Penguin Day
Penguins International’s World Penguin Day page identifies 25 April as the observance date and frames it around penguin awareness and conservation.
Source-backedFixed AnnualIn-depth guide
World Plant Milk Day
The World Plant Milk Day campaign identifies 22 August as its annual date, while ProVeg documents the campaign’s 2017 launch with Plant Based News.
Source-backedFixed AnnualIn-depth guide
World Rainforest Day
Rainforest Partnership states that it founded World Rainforest Day in 2017 and identifies the observance date as 22 June.
Source-backedFixed AnnualIn-depth guide
World Rhino Day
World Rhino Day’s official history records WWF-South Africa’s 2010 announcement and a 2011 international expansion led by Lisa Jane Campbell and Rhishja; September 22 remains the annual dat…
Source-backedRule Based AnnualIn-depth guide
World Rivers Day
World Rivers Day organizers; global initiative launched in 2005 alongside the UN Water for Life Decade
Source-backedFixed AnnualIn-depth guide
World Seagrass Day
A/RES/76/265
Source-backedFixed AnnualIn-depth guide
World Snake Day
Government and zoo sources repeatedly observe World Snake Day on 16 July, including India’s National Zoological Park in 2023 and 2025 and a 2026 zoo program. No single creator, founding ins…
Source-backedFixed AnnualIn-depth guide
World Soil Day
A/RES/68/232
Source-backedFixed AnnualIn-depth guide
World Sparrow Day
The official World Sparrow Day site states that the initiative is observed annually on March 20, was initiated in 2010 by Nature Forever Society with partners, and lists March 20, 2026 for…
Source-backedFixed AnnualIn-depth guide
World Tapir Day
World Tapir Day first-party material verifies annual April 27 observance since 2008 and an organizer/community mission centered on tapir awareness and conservation. A 2018 first-party retro…
Source-backedFixed AnnualIn-depth guide
World Tuna Day
A/RES/71/124
Source-backedFixed AnnualIn-depth guide
World Turtle Day®
The official World Turtle Day site states that American Tortoise Rescue founded the observance in 2000 and that World Turtle Day is held annually on May 23; its 2026 release marks the 26th…
Source-backedFixed AnnualIn-depth guide
World Water Day
A/RES/47/193
Source-backedFixed AnnualIn-depth guide
World Water Monitoring Day
U.S. EPA material documents the inaugural World Water Monitoring Day in 2003 as coordinated by America’s Clean Water Foundation and the International Water Association, originally centered…
Source-backedFixed AnnualIn-depth guide
World Wetlands Day
A/RES/75/317
Source-backedFixed AnnualIn-depth guide
World Wildlife Day
A/RES/68/205