Day Guide for Monday September 18th 2023 What are the holidays on September 18th 2023?

This is our day guide for Monday September 18th 2023 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 2023

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 Century


India (regional): Ganesh Chaturthi

Ganesh Chaturthi is the day when all Hindus celebrate one of the most popular deities, Lord Ganesh

Japan: Respect for the Aged Day

Respect of the Aged Day was established as a national holiday in 1966 to express respect for the elders in the community

Nepal: Haritalika Teej

Teej is a festival, celebrated in Northern India and Nepal to welcome the monsoon season


Switzerland (regional): Bettagsmontag

In Bern, Neuchâtel and Vaud, the Monday after 3rd Sunday in September is a holiday known as Bettagsmontag

Tonga: Birthday of HRH Crown Prince (in lieu)

The current heir to the throne was born on September 17th 1985

Observances on September 18th 2023

USA: National Cheeseburger Day

Some of the observances and national days on this site are cheesy.

USA: National HIV/AIDS and Aging Awareness Day

This day brings attention to the growing number of people living long and full lives with HIV and to their health and social needs.

International: World Bamboo Day

Discover the eco-friendly beauty of bamboo on World Bamboo Day - September 18th! Explore sustainable uses, cultivation, and its positive impact on the environment.

September 17th 2023 | Go to Today | September 19th 2023

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General Information for September 18th 2023
There are 7 public holidays today.
Day 261 of 2023
104 days left in 2023
Week 38 of the year
On this Day in History
1975 - Patty Hearst is arrested after a year on the FBI Most Wanted List.
1837 - Tiffany and Co. (first named Tiffany & Young) is founded by Charles Lewis Tiffany and Teddy Young in New York City. The store is called a "stationery and fancy goods emporium".
1810 - First Government Junta in Chile. Though supposed to rule only in the absence of the king, it is in fact the first step towards independence from Spain, and is commemorated as such.
324 - Constantine the Great decisively defeats Licinius in the Battle of Chrysopolis, establishing Constantine's sole control over the Roman Empire.