19-25 October 2020 Aussie Backyard Bird Count  Birdlife Australia
5 November 2020 World Tsunami Awareness Day United Nations
9-15 November 2020 National Recycling Week  Planet Ark National Recycling Week
8-15 November 2020 NAIDOC Week 

Always Was, Always Will Be
National NAIDOC Committee

21 November 2020 World Fisheries Day  World Fisheries Day
10 December 2020 International Human Rights Day  United Nations World Human Rights Day
11 December 2020 International Mountain Day 

United Nations International Mountain Day

2 February 2021 World Wetlands Day

World Wetlands Day 2020: Wetlands and Biodiversity

11-12 February 2021 International Day of Women & Girls in Science Royal Academy of Science International Trust
25 February 2021 Business Clean-up Day 1800 CUA DAY
28 February 2021 Schools/Youth Clean-up Day 1800 CUA DAY
1 March 2021 Clean Up Australia Day  1800 CUA Day
19 March 2021 Ride2School Day 

Bicycle Network: Ride2School

17-23 March 2021 National Volunteer Week 

Give a little. Change a lot
Volunteering Australia

21 March 2021 World Forestry Day


22 March 2021 World Water Day 

United Nations Water (UN-Water)

23 March 2021 World Meteorological Day 

World Meteorological Organisation 

TBA 2021 Earth Hour 

World Wildlife Fund Earth Hour

5 – 7 April 2021 Future Sustainability Summit 

World Future Energy Summit

18 April 2021 World Heritage Day 

International Council on Monuments and Sites, Australia

23-25 May 2021 2021 Sustainability Symposium Sustainable Schools Network
TBA 2021 International Composting Awareness Week (ICAW) 

Better Soil, Better Life, Better Future
International Compost Awareness Week, Australia

TBA 2021 Walk Safely to School Day  Pedestrian Council of Australia
TBA 2021 National Reconciliation Week 

In This Together
Reconciliation Australia

5 June 2021 World Environment Day

United Nations World Environment Day

8 June 2021 World Oceans Day

World Oceans Day Youth Advisory Council

15 June 2021 Global Wind Day

Wind Europe and Global and Energy Council

1-31 July 2021 Plastic Free July 

Plastic Free Foundation

30 July 2021 Schools Tree Day 

Planet Ark Schools Tree Day

31 July 2021 World Ranger Day 

International Ranger Federation

1 August 2021 National Tree Day 

Planet Ark National Tree Day

17-23 August 2021 Keep Australia Beautiful Week 

Keep Australia Beautiful (KAB)

TBA 2021 Record Wombats in Your Local Area


1-30 September 2021 National Biodiversity Month 

Biodiversity Month

1-30 September 2021 Save the Koala Month  Australian Koala Foundation
4 September 2021 Walk to Work Day   Diabetes Australia Walk to Work Day 
7 September 2021 National Threatened Species Day  Department of Agriculture, Water and the Environment
7-13 September 2021 National Organic Week 

Centre for Organic Research and Education

9 September 2021 National Bilby Day 

Save the Bilby Fund

20 September 2021 Sustainable House Day

Renew Australia Sustainable House Day

1 October 2021 World Habitat Day 

United Nations World Habitat Day

16 October 2021 National Ride to Work Day

Bicycle Network: Ride2Work

TBA 2021 Cool Australia’s Enviroweek 

Cool Australia’s Enviroweek