All special days A–Z
81 special days
| Anime Day | Apr 15 |
| Apple Pie Day | May 13 |
| Beaujolais Nouveau Day | Third Thursday of November |
| Bloody Mary Day | Jan 1 |
| Bonfire Night | Nov 5 |
| Buy Nothing Day | Day after the 4th Thursday of November |
| Carl Sagan Day | Nov 9 |
| Computer Security Day | Nov 30 |
| Danny DeVito Day | Nov 17 |
| Darwin Day | Feb 12 |
| Data Privacy Day | Jan 28 |
| Day of the Dead | Nov 2 |
| Diwali | Date varies (October or November) |
| Earth, Wind & Fire Day | Sep 21 |
| Great American Smokeout | Third Thursday of November |
| Homemade Bread Day | Nov 17 |
| International Day of Happiness | Mar 20 |
| International Gin & Tonic Day | Oct 19 |
| International Hummus Day | May 13 |
| International Ninja Day | Dec 5 |
| Jellyfish Day | Nov 3 |
| Milk Expiry Day | Jul 3 |
| Monkey Day | Dec 14 |
| Programmers' Day | Sep 12 |
| Remembrance Day | Nov 11 |
| Saxophone Day | Nov 6 |
| Talk Like A Pirate Day | Sep 19 |
| Thank You Note Day | Dec 26 |
| Unicorn Day | Apr 9 |
| Veterans Day | Nov 11 |
| World Coffee Day | Oct 1 |
| World Hello Day | Nov 21 |
| World Hippo Day | Feb 15 |
| World Kindness Day | Nov 13 |
| World Radiography Day | Nov 8 |
| World Tsunami Awareness Day | Nov 5 |
| World Water Day | Mar 22 |