1. National Chinese Day   
2. International Coffee Day   
3. Elders Day  
4. World Animal Day  
5. Amazon Prime Day  
6. Noodle Day  
7. Navratri   
8. National Fluffernutter Day 
9. Shemini Atzeret 
10. World Mental Health Day 
11. National Sausage Pizza Day 
12. National Pulled Pork Day 
13. British Yorkshire Pudding Day 
14. ​National Fossil Day 
15. National Mushroom Day
16. Global Cat Day 
17. National Pasta Day 
18. National Chocolate Cupcake Day 
19. Milad an-Nabi (Mawlid) 
20. International Sloth Day
21. National Apple Day
22. National Nut Day 
23. National Mole Day 
24. National Bologna Day 
25. British Summertime Ends
26. National Chicken Fried Steak Day 
27. National Black Cat Day 
28. Ohi Day 
29. National Breadstick Day
30. National Candy Corn Day
31. Halloween  

Cites:

https://boardandbrush.com/blog/where-do-halloween-colors-come-from/