Nationale natuurdag
February 22, Thursday
September 4, Wednesday
Nationale natuurdag in andere jaren
- 2021 February 22, Monday
- 2021 September 4, Saturday
- 2022 February 22, Tuesday
- 2022 September 4, Sunday
- 2023 February 22, Wednesday
- 2023 September 4, Monday
- 2025 February 22, Saturday
- 2025 September 4, Thursday