Source-backedEdition Specific
Manatee Appreciation Day
The Endangered Species Coalition and Save the Manatee Club marked Manatee Appreciation Day on March 25, 2026. Because the supplied authority is edition-specific, future dates should be refr…
Topic facet
Nature Environment observances
Nature, ecosystems, environmental awareness and conservation.
181 records
Authority records
Source-backedEdition Specific
March equinox
The U.S. Naval Observatory gives the March 2026 equinox at 14:46 UT on 20 March.
Source-backedEdition Specific
March equinox (Northern Hemisphere spring equinox)
The U.S. Naval Observatory gives the March equinox at 14:46 UT on 20 March 2026; its season guidance notes that seasonal naming conventions are hemisphere-dependent.
Source-backedVariable Custom
March equinox / astronomical spring begins (Northern Hemisphere)
The U.S. Naval Observatory publishes target-year equinox instants and explains that equinoxes mark the beginning of spring or autumn depending on hemisphere.
Source-backedRule Based Annual
Marine Day (Umi no Hi)
Cabinet Office, Government of Japan
Source-backedFixed Annual
Marmot Day
Alaska legislation establishes 2 February of each year as Marmot Day and provides for suitable observance; Alaska State Archives also lists the day among state-designated dates.
Source-backedEdition Specific
Mountain Day (山の日)
Japan’s Cabinet Office lists Mountain Day on 11 August 2026 among the national holidays and describes its purpose as an opportunity to become familiar with mountains and appreciate their be…
Source-backedEdition Specific
National Ag Day
Agriculture Council of America
Source-backedFixed Annual
National Bird Day
The Avian Welfare Coalition states it established National Bird Day on January 5 as a day of action and education concerning captive birds.
Source-backedRule Based Annual
National Bison Day
The U.S. National Park Service states National Bison Day has been observed annually on the first Saturday in November since 2012.
Source-backedRule Based Annual
National Black Bear Day
The National Black Bear Festival states that it secured the National Black Bear Day designation and that the day is celebrated on the first Saturday in June each year.
Source-backedFixed Annual
National Black Cat Day
Cats Protection states National Black Cat Day is held each year on October 27 and that it created the campaign in 2011.
Source-backedFixed Annual
National Diatomaceous Earth Day
EP Minerals states that it founded National Diatomaceous Earth Day, that National Day Calendar approved the day in 2016, and that the observance is on August 31.
Source-backedFixed Annual
National Dog Party Day
Current observance references identify June 21 as the recurring date and attribute creation in 2011 to pet author and safety educator Arden Moore.
Source-backedFixed Annual
National Feral Cat Day®
Alley Cat Allies states it created National Feral Cat Day in 2001 and that the observance falls on October 16.
Source-backedFixed Annual
National Find a Rainbow Day
The Georgia Lottery has run an official National Find a Rainbow Day promotion on 3 April, while other institutional/brand calendars also use April 3. This supports the stable informal date…
Source-backedEdition Specific
National Fossil Day
National Park Service current National Fossil Day program
Source-backedEdition Specific
National Garden Meditation Day
The National Garden Scheme explicitly promoted National Garden Meditation Day on Monday 3 May in 2021. The available first-party evidence verifies that edition but does not establish a safe…
Source-backedFixed Annual
National Gardening Day
USDA’s National Institute of Food and Agriculture lists April 14 as National Gardening Day in its 2026 social-media toolkit.
Source-backedEdition Specific
National Gardening Exercise Day
University of Nevada, Reno Extension’s 2026 gardening calendar lists June 6 as National Gardening Exercise Day. The institutional evidence confirms the 2026 date but does not by itself prov…
Source-backedEdition Specific
National Go Birding Day
The U.S. Bureau of Land Management and state public-lands calendars acknowledge National Go Birding Day on April 25, 2026. Available first-party evidence establishes the 2026 edition but do…
Source-backedFixed Annual
National Holistic Pet Day
Holistic Select recognizes National Holistic Pet Day and attributes its origin to animal advocate Colleen Paige; current observance references use August 30.
Source-backedRule Based Annual
National Hunting and Fishing Day
U.S. Fish & Wildlife Service states Congress established the observance in 1972 and it is celebrated on the fourth Saturday in September
Source-backedFixed Annual
National Learn About Butterflies Day
Butterfly Pavilion identifies March 14 as Learn About Butterflies Day, and institutional event calendars corroborate the date.
Source-backedFixed Annual
National Love a Tree Day
University of California Agriculture and Natural Resources published a 2026 article explicitly in celebration of National Love a Tree Day on May 16.
Source-backedFixed Annual
National Love Your Pet Day
New York Senate resolutions in multiple years identify February 20 as Love Your Pet Day in conjunction with the observation of National Love Your Pet Day.
Source-backedEdition Specific
National Marine Week
The Wildlife Trusts
Source-backedFixed Annual
National Panda Day
Smithsonian’s National Zoo explicitly identifies 16 March as National Panda Day in its giant-panda conservation and anniversary coverage.
Source-backedFixed Annual
National Plant a Flower Day
Independent observance calendars place National Plant a Flower Day on March 12 and present it as an annually recurring informal observance.
Source-backedRule Based Annual
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.
Source-backedRule Based Annual
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 Annual
National Public Lands Day
National Park Service current 2026 observance page; led by NEEF in partnership with NPS and federal agencies
Source-backedEdition Specific
National Reptile Day / National Reptile Awareness Day
Current Alipore Zoological Garden programming lists National Reptile Awareness Day on 21 October 2026, while U.S. zoo programming uses the shorter National Reptile Day name on 21 October.
Source-backedRule Based Annual
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 Annual
National Trails Day®
American Hiking Society; annual event begun in 1993
Source-backedRule Based Annual
National Tree Day
Planet Ark lists National Tree Day on Sunday, July 26, 2026 and says the event, established in 1996, is dedicated to the last Sunday in July.
Source-backedFixed Annual
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 Annual
National Weed Your Garden Day
Independent observance calendars place National Weed Your Garden Day on June 13 and treat the date as annual.
Source-backedFixed Annual
National Wildlife Day
Creator Colleen Paige’s official site lists National Wildlife Day on September 4 among the observances she founded/maintains.
Source-backedFixed Annual
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-backedFixed Annual
Penguin Awareness Day
SEA LIFE London states that Penguin Awareness Day is marked every year on January 20; aquarium and zoo institutions also use the date for penguin education.
Source-backedEdition Specific
Perseid meteor shower peak
NASA identifies the 2026 Perseid meteor shower peak around the night of 12–13 August.
Source-backedEdition Specific
RSPB Big Garden Birdwatch (current first-party event)
Current RSPB first-party materials identify Big Garden Birdwatch for 23–25 January 2026. The inherited “Feed the Birds Day” wording is not presented as the current formal RSPB campaign name.
Source-backedHistorical Legacy
RSPB Feed the Birds Day (historical campaign)
The RSPB’s 2004–05 annual review records that Feed the Birds Day attracted 21,000 people to 86 events across the UK in October. Current RSPB first-party materials instead promote Big Garden…
Source-backedRule Based Annual
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 Annual
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 Annual
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-backedFixed Annual
Save the Rhino Day
The International Rhino Foundation identifies May 1 as Save the Rhino Day in its conservation communications.
Source-backedEdition Specific
September equinox
The U.S. Naval Observatory gives the September 2026 equinox at 00:05 UT on 23 September.
Source-backedEdition Specific
September equinox (Northern Hemisphere fall equinox)
The U.S. Naval Observatory gives the September equinox at 00:05 UT on 23 September 2026; seasonal naming depends on hemisphere.
Source-backedFixed Annual
Shark Awareness Day
The Shark Trust identifies Shark Awareness Day on July 14, with current conservation organizations continuing to use that date.
Source-backedFixed Annual
Swallows Depart from San Juan Capistrano Day
Mission San Juan Capistrano materials associate 23 October, the Day of San Juan, with the traditional departure of the swallows; Journey North independently documents the late-October migra…
Source-backedFixed Annual
Take Your Houseplants for a Walk Day
Wellcat Holidays lists Take Your Houseplants for a Walk Day on July 27.
Source-backedFixed Annual
Turtle Adoption Day
ECOcalendar describes Turtle Adoption Day on 27 November and traces its establishment to a 2011 Christine Shaw blog post; independent observance documentation likewise records 27 November a…
Source-backedEdition Specific
Whooping Crane Festival
Port Aransas tourism’s official site lists the 2026 Whooping Crane Festival for 19–22 February and describes it as the 29th anniversary festival focused on the returning cranes.
Source-backedFixed Annual
Wild Koala Day
Wild Koala Day organizers
Source-backedFixed Annual
World Animal Day
World Animal Day movement
Source-backedEdition Specific
World Animal Reiki Day
The Shelter Animal Reiki Association identifies 5 February as World Animal Reiki Day and documents the 2026 edition and the observance’s organizer history.
Source-backedFixed Annual
World Bamboo Day
World Bamboo Organization (WBO)
Source-backedFixed AnnualIn-depth guide
World Bee Day
A/RES/72/211
Source-backedFixed Annual
World Bonobo Day
The Bonobo Project / Friends of Bonobos
Source-backedFixed AnnualIn-depth guide
World Cleanup Day
A/RES/78/122
Source-backedFixed Annual
World Coconut Day
International Coconut Community (ICC)
Source-backedFixed AnnualIn-depth guide
World Cotton Day
A/RES/75/318
Source-backedFixed Annual
World Curlew Day
Curlew Action
Source-backedFixed Annual
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-backedEdition Specific
World Donkey Day
The Isle of Wight Donkey Sanctuary’s current 2026 programme explicitly marks World Donkey Day on Friday 8 May and builds welfare-focused programming around the observance.
Source-backedFixed Annual
World Elephant Day
World Elephant Day campaign
Source-backedFixed AnnualIn-depth guide
World Environment Day
A/RES/2994 (XXVII)
Source-backedEdition Specific
World Fish Migration Day
The organizer states that World Fish Migration Day culminates every two years and identifies 23 May 2026 as the seventh edition.