Sunday, September 16, 2018 Monday, September 16, 2019 Wednesday, September 16, 2020 Thursday, September 16, 2021 Friday, September 16, 2022 Saturday, September 16, 2023 Monday, September 16, 2024 Tuesday, September 16, 2025 Wednesday, September 16, 2026 Thursday, September 16, 2027 Saturday, September 16, 2028 Sunday, September 16, 2029 Monday, September 16, 2030 Tuesday, September 16, 2031 World Ozone Day
