1) 20th September
2) 21st September
3) 22nd September
4) 23rd September
Explanation:
The International Coastal Cleanup Day (ICCD) is observed annually on the third Saturday of September. This year it was observed on September 21, 2019. It encourages people along with ocean conservation groups, and environmental organizations to clean up the garbage/trash on the beach. 2019 International Coastal Cleanup Animal is The Pelican.