The 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!

September ‘22

All month: Organic September in the UK

Thursday, 1 September: Japan Dolphins Day

Saturday, 3 September (first Saturday of September): International Vulture Awareness Day

Monday, 5 September: Amazon Day (International),

Wednesday, 7 September: International Day of Clean Air for blue skies

Friday, 16 September:

Friday, 16 to Sunday, 25 September: The Great British Beach Clean

Saturday, 17 September:

Sunday, 18 September: World Water Monitoring Day

Sunday, 18 to Saturday, 24 September: (Third week in September): National Indoor Plant Week in the US.

Monday, 19 to Sunday, 25 September: Recycle Week in the UK

Wednesday, 21 September: Zero Emissions Day (international)

Thursday, 22 September:

Thursday, 22 September to Saturday, 22 October: Seed Gathering Season in the UK

Friday, 23 September: Autumnal Equinox

Saturday, 24 to Friday, 30 September: FSC Forest Week (Forest Stewardship Council)

Saturday, 24 September to Sunday, 2 October: The Great Big Green Week in the UK

Sunday, 25 September: (Fourth Sunday in September) World Rivers Day

Monday, 26 September:

October ’22

All month:

Saturday, 1 October: World Vegetarian Day

Sunday, 2 October: World Farm Animals Day

Monday, 3 to Sunday, 9 October: Circular Week Poland

Monday, 3 October: (first Monday in October) World Habitat Day

Tuesday, 4 October:

Wednesday, 5 October: (first Wednesday in October) Energy Efficiency Day

Thursday, 6 October: National Badger Day in the UK

Saturday, 8 October: (Second Saturday in October) World Migratory Bird Day (Central and Southern America, Caribbean – see also May)

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

Thursday, 13 October: International Day for Natural Disaster Reduction

Friday, 14 October: International E-Waste Day

Sunday, 16 October: World Food Day

Sunday, 16 October to Wednesday, 16 November: Cook and Share Month

Monday, 17 October: International Day for the Eradication of Poverty

Tuesda,y 18 October: World Okapi Day

Thursday, 20 October: International Sloth Day

Friday, 21 October: Reptile Awareness Day (?)

Friday, 22 October: International Wombat Day

Sunday, 23 October: World Snow Leopard Day

Monday, 24 October:

Tuesday, 25 October: International Gibbon Day

Friday, 28 October: (last Friday in October) World Lemur Day

November ’22

All month: World Vegan Month

Tuesday, 1 November: World Vegan Day

Saturday, 5 November (First Saturday in November): National Bison Day in the US

Sunday, 6 to Friday, 18 November: COP 27 (27th Conference of the Parties to the United Nations Framework Convention on Climate Change)

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

Tuesday, 15 November: America Recycles Day

Monday, 21 November: World Fisheries Day

Tuesday, 22 to Thursday, 24 November: Nordic Circular Summit

Tuesday, 29 November: International Jaguar Day

December ’22 (dates to be confirmed)

International Cheetah Day

World Soil Day (international)

International Animal Rights Day (international)

International Mountain Day

Monkey Day

Winter Solstice

Tuesday, 6 to Thursday, 8 December: World Circular Economic Forum (WCEF) in Rwanda

January ’23 (dates to be confirmed)

All month:

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

National Bird Day (US) – see also World Migratory Bird Day in May and October

Big Schools’ Birdwatch (UK)

Houseplant Week (UK) – see also National Indoor Plant Week in September

Davos Forum

Martin Luther King Jr. Day in the US.

Penguin Awareness Day (International)

Squirrel Appreciation Day (international) and Red Squirrel Day (UK)

World Environmental Education Day

International Zebra Day

February ’23 (dates to be confirmed)

Big Schools’ Birdwatch (UK)

World Wetlands Day

Student Volunteering Week in the UK

World Bonobo Day

World Hippopotamus Day

Random Acts of Kindness Day (international)

(third Saturday in February): World Pangolin Day

World Whale Day

World Day of Social Justice

Fairtrade Fortnight in the UK

International Mother Language Day

International Polar Bear Day

March ’23 (dates to be confirmed)

Fifth session of the United Nations Environment Assembly

Food Waste Action Week (UK)

UN World Wildlife Day

International Women’s Day

International Day of Action for Rivers (see also World Rivers Day in September)

Buzzards Day (no link)

Panda Day (no link) (see also International Red Panda Day in September)

Global Recycling Day (see also Recycle Week in October and America Recycles Day in November)

World Sparrow Day

World Frog Day (no link)

International Day of Forests and World Wood Day and World Planting Day (no link) (see also World Rainforest Day in June)

World Water Day

International Seal Day

World Bear Day

World Meteorological Day

Earth Hour (see also Earth Day in April)

(last Wednesday in March): Manatee Appreciation Day (no link)

Great British Spring Clean

Spring equinox

April ’23 (dates to be confirmed)

World Aquatic Animal Day
see also World Ocean Day in June, National Marine Week (UK) in July/August

Community Garden Week
see also National Gardening Week (UK) and Go Public Gardens Days (US) in May, National Children’s Gardening Week (UK) and Garden Wildlife Week (UK) in May/June, and National Growing for Wellbeing Week (UK) in June

World Health Day

International Beaver Day

Microvolunteering Day
See also Student Volunteering Week (UK) in February

Bat Appreciation Day (no link)

International Dark Sky Week

Earth Day
See also Earth Hour in March

World Malaria Day

World Penguin Day (no link)
See also Penguin Appreciation Day in January

World Tapir Day

Stop Food Waste Day
See also Food Waste Action Week (UK) in March and World Food Day in October

Arbor Day (US)
See also International Day of Forests in March, World Rainforest Day in June, and FSC Friday in September.

May ’23 (dates to be confirmed)

All month:

National Clean Air Month in the US

National Walking Month in the UK

No Mow May in the UK

Hedgehog Awareness Week in the UK

International Compost Awareness Week

Dawn Chorus Day (first Sunday in May)

National Gardening Week in the UK

World Tuna Day

International Leopard Day (no link)

Wild Koala Day in Australia

Go Public Gardens Days in the US

Green Up Day in Vermont, US (first Saturday in May)

World Donkey Day (no link)

World Migratory Bird Day in the US and Canada

World Fairtrade Day
see also Fairtrade Fortnight in February

Walk to School Week in the UK

Bike to Work Day in the US
see also Cycle to Work Day in October

Endangered Species Day (international, third Friday in May)

World Bee Day

International Day for Biological Diversity

World Turtle Day

European Day of Parks

World Otter Day

National Children’s Gardening Week in the UK

World Parrot Day

Every Flower Counts in the UK

June ’23 (dates to be confirmed)

All month: 30 Days Wild in the UK

National Children’s Gardening Week in the UK

Volunteers Week in the UK

World Reef Day

World Environment Day

Marine Environment Protection Committee 78 (IMO)

Bike Week in the UK

Garden Wildlife Week in the UK

National Growing for Wellbeing Week in the UK

World Ocean Day

Coral Triangle Day in south-east Asia

International Lynx Day

National Cougar Day is the US

Global Wind Day

World Sea Turtle day

World Refill Day

Clean Air Day in the UK

World Day to Combat Desertification and Drought

Plastic-Free Beauty Day in the UK

World Croc Day

Sustainable Gastronomy Day (international)

Show Your Stripes Day

Summer solstice

World Giraffe Day

World Camel Day

World Rainforest Day

World Sand Dunes Day

July ’23 (dates to be confirmed)

All month: Plastic Free July (international)

Clean Beaches Week in the US

International Plastic Bag Free Day

National Don’t Step on a Bee Day in the UK

World Population Day

Shark Awareness Day (international)

World Chimpanzee Day

World Orca Day

World Snake Day

National Marine Week in the UK

World Nature Conservation Day

Love Parks Week in the UK

International Tiger Day

August ’23 (dates to be confirmed)

International Clouded Leopard Day

International Day of the World’s Indigenous People

National Allotments Week (UK)

World Lion Day

World Elephant Day

World Hirola Day

International wolf Day

National Honey Bee Day (?)

World Orangutan Day

World African Wild Dog Day

International Whale Shark Day

September ’23 (dates to be confirmed)

All month: Organic September in the UK

Japan Dolphins Day

(first Saturday of September): International Vulture Awareness Day

Amazon Day (International),

International Day of Clean Air for blue skies

International Day for the Preservation of the Ozone Layer

PARK(ing) Day (International)

The Great British Beach Clean

(third Saturday in September) World CleanUp Day

(third Saturday in September) International Red Panda Day

World Water Monitoring Day

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

Recycle Week in the UK

Zero Emissions Day (international)

World Car Free Day

World Rhino Day

Seed Gathering Season in the UK

Autumnal Equinox

FSC Forest Week (Forest Stewardship Council)

(Fourth Sunday in September) World Rivers Day

World Environmental Health Day

World Cassowary Day

Sources and further information: