1) September 28
2) September 29
3) September 30
4) October 1
Explanation:
On October 1, 2019, World Vegetarian Day was celebrated all over the world to promote the joy, compassion and life-enhancing possibilities of vegetarianism. In 1977, the day was originated by the North American Vegetarian Society (NAVS) and endorsed by the International Vegetarian Union in 1978.