For the lovers of the footpaths and the footnotes

Sustainability Calendar

This is the full 12 month sustainability calendar, showing all sustainability and environment observances, holidays and days of action. I’ll keep this page current, but if you’re aware of any date changes or postponements, let me know! Are you aware of a day that I’ve missed? Let me know!

January ’21

All month:

  • Veganuary (UK) – see also World Vegan Month and World Vegan Day, both in November
  • Walk Your Dog Month (international)

Until 5 January: Walk in Winter (UK) replaces the Festival of Winter Walkssee also National Walking Month in May

5 January: National Bird Day (US)see also World Migratory Bird Day in May and October

5 January to 22 February: Big Schools’ Birdwatch (UK)

11 to 17 January: Houseplant Week (UK) – see also National Indoor Plant Week in September

21 January: Squirrel Appreciation Day (international) and Red Squirrel Appreciation Day (UK)

25 to 29 January: The Davos Agenda (online conference by World Economic Forum)

31 January: International Zebra Day (international)

February ’21

until 22 February: Big Schools’ Birdwatch (UK)

2 February: World Wetlands Day

14 February: World Bonobo Day

15 February: World Hippopotamus Day

20 February (third Saturday in February): World Pangolin Day

22 February to 7 March: Fairtrade Fortnight (international)

27 February: International Polar Bear Day

March ’21

Until 7 March: Fairtrade Fortnight (international)

3 March: World Wildlife Day

14 March: International Day of Action for Rivers (international)

15 March: Buzzards Day (?)

15 to 21 March: Compost Week (UK)

16 March: Panda Day (?)

18 March: Global Recycling Day (international)

20 March: The Great British Spring Clean (UK)

20 March: World Sparrow Day (international)

20 March: World Frog Day (international)

21 March: International Day of Forests and World Wood Day and World Planting Day (international)

22 to 28 March: Tick Bite Prevention Week (UK)

22 March: World Water Day

22 March: International Seal Day (international)

23 March: World Bear Day (international)

23 March: World Meteorological Day

27 March: Earth Hour

31 March (last Wednesday in March): Manatee Appreciation Day (?)

April ’21

3 April: World Aquatic Animal Day (international)

3 April: Walk to Work Day (international)

4 to 18 April: Discover National Parks Fortnight (UK)

5 April: Community Garden Week (UK)

7 April: World Health Day

7 April: International Beaver Day

8 April: Zoo Lovers Day (?)

15 April: International Microvolunteering Day

17 April: Bat Appreciation Day (?)

18 to 24 April: English Tourism Week (England, UK)

19 to 25 April: International Dark Sky Week

21 April: World Fish Migration Day (?)

22 April: International Mother Earth Day or Earth Day (international)

24 April: Arbor Day (US)

25 April: World Malaria Day

25 April: World Penguin Day

27 April: World Tapir Day

27 April to 2 May: National Gardening Week (UK)

28 April: Stop Food Waste Day (international)

May ’21

All month: No Mow May (northern hemisphere)

All month: National Walking Month (UK)

All month: National Clean Air Month (US)

until 2 May: National Gardening Week (UK)

1 May: Green Up Day (Vermont, US)

2 May: World Tuna Day

3 to 10 May: International Compost Awareness Week (international)

3 May: Hedgehog Awareness Week (UK)

3 May: International Leopard Day

3 May: International Dawn Chorus Day

3 May: Wild Koala Day (?)

4 May: Greenery Day (Japan)

8 to 16 May: National Public Gardens Week (US)

8 May: World Donkey Day

8 May: World Migratory Bird Day (US and Canada – see also October)

9 May: World Fairtrade Day

11 to 14 May: Water Saving Week (UK)

18 May: Walk to School Week (international)

20 May: World Bee Day (international)

21 May (third Friday in May): Endangered Species Day (international)

21 May (third Friday in May): Bike to Work Day

22 May: International Day for Biological Diversity (international)

23 to 31 May: Every Flower Counts (?)

23 to 30 May: National Children’s Gardening Week (?)

23 May: World Turtle Day (international)

24 May: European Day of Parks

27 May: World Otter Day

31 May: World Parrot Day

31 May to 6 June: Garden Wildlife Week (UK)

June ’21

until 6 June: Garden Wildlife Week (UK)

All month: 30 Days Wild (UK)

1 to 6 June: National Growing for Wellbeing Week (UK)

1 June: World Reef Day

5 June: World Environment Day

6 to 13 June: Bike Week (?)

8 June: World Ocean’s Day

9 June: Coral Triangle Day

11-13 June: G7 Summit at Carbis Bay, Cornwall, UK

11 June: International Lynx day

12 June: National Cougar Day (?)

15 June: Global Wind Day

16 June: World Sea Turtle day

17 June: World Day to Combat Desertification and Drought

17 June: Plastic Free Beauty Day (?)

17 June: World Croc Day

18 June: Sustainable Gastronomy Day (?)

19 June: National Refill Day (UK)

20 June: International Clean Air Day (international)

21 June: World Giraffe Day

22 June: World Camel Day

22 June: World Rainforest Day

July ’21

All month: Plastic Free July (international)

1 to 6 July: Clean Beaches Week (US)

3 July: International Plastic Bag Free Day (international)

10 July: Don’t Step on a Bee Day (?)

11 July: World Population Day (international)

11 July: Shark Awareness Day (?)

14 July: World Chimpanzee Day

14 July: World Orca Day

12 to 19 July: Love Parks Week (UK)

25 July to 8 August: National Marine Week (UK)

28 Jul: World Nature Conservation Day (international)

29 July: International Tiger Day (international)

August ’21

Until 8 August: National Marine Week (UK)

4 August: International Clouded Leopard Day

9 August: International Day of the World’s Indigenous People (international)

10 to 15 August: National Allotments Week (UK)

10 August: World Lion Day

12 August: World Elephant Day

12 August: World Hirola Day

13 August: International wolf Day

15 August: National Honey Bee Day (?)

19 August: World Orangutan Day

26 August: World African Wild Dog Day

30 August: International Whale Shark Day

September ’21

All month: Organic September (UK)

1 September: Japan Dolphin Day

4 September (first Saturday of September): International Vulture Awareness Day

5 September: Amazon Rainforest Day (?)

Third week in September: National Indoor Plant Week (US)

16 September: International Day for the Preservation of the Ozone Layer

17 September (third Friday in Septmeber): PARK(ing) Day (?)

18 September (third aturday in September): World CleanUp Day and National CleanUp Day

18 September (third Saturday in September): International Red Panda Day

18 September: World Water Monitoring Day

18 to 20 September: Great British Beach Clean (UK)

21 September: Zero Emissions Day (?)

22 September: World Car Free Day (international)

22 September: World Rhino Day

23 September to 22 October: Seed Gathering Season (UK)

23 September to 30 October: Recycle Week (?)

25 September: FSC Friday or Forest Stewardship Council Friday (?)

26 September: World Environmental Health Day

26 September: World Cassowary Day

26 September (last Sunday of September): World Rivers Day

October ’21

All month: Unblocktober (?)

All month: International Walk to School Month (international)

until 22 October: Seed Gathering Season (UK)

1 October: World Vegetarian Day (international)

2 October: World Farm Animals Day

4 October (first Monday in October): World Habitat Day (international)

4 October: World Animal Day (international)

4 October: No Disposable Cup Day (UK)

6 October (first Wednesday in October): Energy Efficiency Day (?)

6 October:National Badger Day (UK)

8 October: National Clean Air Day (UK) and International Clean Air Day

9 October: World Migratory Bird Day (Central and Southern America, Caribbean – see also May)

13 October: International Day for Natural Disaster Reduction

14 October: International E-Waste Day

16 October: World Food Day (international)

17 October: International Day for the Eradication of Poverty (international)

18 October: World Okapi Day

20 October: International Sloth Day

21 October: Reptile Awareness Day (?)

22 October (fourth Wednesday in October): Sustainability Day (?)

22 October: International Wombat Day

23 October: International Snow Leopard Day

24 October: Freshwater Dolphin Day

24 October: International Gibbon Day

24 October: International Day of Climate Action

24 October (last Friday in October): World Lemur Day

November ’21

All month: World Vegan Month (international)

November to January: Big Energy Saving Winter (UK) replaces Big Energy Saving Week

1 to 12 November: COP 26 (26th UN Climate Change Conference of the Parties) in Glasgow, Scotland

1 November: World Vegan Day

6 November: International Day for Preventing the Exploitation of the Environment in War and Armed Conflict

6 November (First Saturday in November): National Bison Day

15 November: America Recycles Day

21 November: World Fisheries Day

29 November: International Jaguar Day

December ’21

November to January: Big Energy Saving Winter (UK) replaces Big Energy Saving Week

4 December: International Cheetah Day

5 December: World Soil Day (international)

10 December: International Animal Rights Day (international)

11 December: International Mountain Day (international)

14 December: Monkey Day (?)

Sources and further information:

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