385 days are past since October 21, 2023
| Date | Weekday | Event | Country | Type |
|---|---|---|---|---|
| 21 Oct | Saturday | Ndadaye Day | Burundi | Public |
| 21 Oct | Saturday | Phulpati | Nepal | Public |
| 21 Oct | Saturday | Third Day of Constitution Day | Niue | Public |
| 21 Oct | Saturday | Remembrance Day | Serbia | Non Public |
| 21 Oct | Saturday | National Annual Tree Loving Day | Thailand | Non Public |
| 21 Oct | Saturday | National Dental Hygiene Day | Thailand | Non Public |
| 21 Oct | Saturday | National Nurses' Day | Thailand | Non Public |
| 21 Oct | Saturday | Seventh Day of the Vegetarian Festival | Thailand | Non Public |
| 21 Oct | Saturday | Overseas Chinese Day | Taiwan | Non Public |
| 21 Oct | Saturday | Saint Ursula's Day | British Virgin Islands | Public |