Date | Important Day / Observance | 2026 Theme / Key Focus |
| 1 September | National Nutrition Week | Nutrition awareness & healthy diet |
2 September | World Coconut Day | Coconut industry & sustainable development |
| 5 September | Teachers’ Day (India) | Honours Dr. Sarvepalli Radhakrishnan |
| 5 September | International Day of Charity | Promoting charitable activities |
| 7 September | International Day of Clean Air for Blue Skies | Clean air & reducing air pollution |
| 8 September | International Literacy Day | “Literacy for people, the planet and prosperity” |
| 8 September | World Physiotherapy Day | Physiotherapy & physical activity in prevention, management and rehabilitation of cardiovascular disease and stroke |
| 9 September | International Day to Protect Education from Attack | Protecting education during conflict and emergencies |
| 10 September | World Suicide Prevention Day | “Changing the Narrative on Suicide” |
| 12 September | International Day for South-South Cooperation | South-South cooperation & development |
| 14 September | Hindi Diwas | Promotion of Hindi language |
| 15 September | International Day of Democracy | “Bring human rights into focus” |
| 15 September | Engineers’ Day (India) | Honours Sir M. Visvesvaraya |
| 16 September | World Ozone Day / International Day for the Preservation of the Ozone Layer | “Global action for a cooler planet – Celebrating 10 years of sustainable cooling under the Kigali Amendment” |
| 17 September | World Patient Safety Day | “Safe care for noncommunicable diseases” |
| 18 September | International Equal Pay Day | Equal pay for work of equal value |
| 21 September | International Day of Peace | “Invest in Peace – For Everyone, Everywhere, Every Day” |
| 21 September | World Alzheimer’s Day | Alzheimer’s awareness & dementia |
| 22 September | World Rhino Day | Rhinoceros conservation |
| 23 September | International Day of Sign Languages | Sign-language rights, accessibility & inclusion |
| 24 September | World Maritime Day | “From Policy to Practice: Powering Maritime Excellence” |
| 25 September | World Pharmacists Day | “Empowering pharmacists for healthier futures” |
| 26 September | International Day for the Total Elimination of Nuclear Weapons | Nuclear disarmament |
| 27 September | World Tourism Day | “Digital Agenda and Artificial Intelligence to Redesign Tourism” |
| 28 September | World Rabies Day | “Stronger Together” |
| 29 September | World Heart Day | “Don’t Miss a Beat” |
| 29 September | International Day of Awareness of Food Loss and Waste | Transformative Potential of Reducing Food Loss and Waste |
| 30 September | International Translation Day | Translation, multilingualism & cultural understanding |
Here is an exam-focused September 2026 important-days table, covering major National, International and UN observances, along with their 2026 themes where officially available.