This is our day guide for Friday September 18th 2026 which shows you at a glance what's happening on this day around the world. Using the calendar on this page, you can look at a day guide for any day. Why not look up your birthday to see which holidays you share it with?
Holidays on September 18th 2026
Angola: National Heroes' Day (in lieu)
Marks the birthday of the national hero Agostinho Netowho was born on this day in 1922.Not a Public Holiday
Armenia: Exaltation of the Holy Cross
Celebrates the return of the Holy Cross to Jerusalem following its capture by the Persians
Chile: Independence Day
On September 18th 1810, Chile broke from Spanish rule, declaring their independence. The Spanish had ruled Chile since the middle of the Sixteenth CenturySeptember 17th 2026 | Go to Today | September 19th 2026
| Choose a Day |
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| General Information for September 18th 2026 | |
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| There are 3 public holidays today. | |
| Day 261 of 2026 | |
| 104 days left in 2026 | |
| Week 38 of the year | |
| On this Day in History | |
| 1962 - Burundi, Jamaica, Rwanda and Trinidad and Tobago are admitted to the United Nations. | |
| 1934 - The USSR is admitted to the League of Nations. | |
| 1922 - Hungary is admitted to the League of Nations. | |
| 1739 - The Treaty of Belgrade is signed, ceding Belgrade to the Ottoman Empire. |
Office Holidays provides calendars with dates and information on public holidays and bank holidays in key countries around the world.
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