Day Guide for Monday 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?

Observances on September 18th 2023

National Cheeseburger Day 🍔

Food
USA

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

National HIV/AIDS and Aging Awareness Day

Health
USA

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

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General Information for September 18th 2023

There are 2 observances on this day.
99 days to go.
Day 261 of 2023
104 days left in 2023
Week 38 of the year

Moon phase

On this Day in History

2007 - Buddhist monks join anti-government protesters in Myanmar, starting what some call the Saffron Revolution.
1870 - Old Faithful Geyser is observed and named by Henry D. Washburn during the Washburn-Langford-Doane Expedition to Yellowstone.
1809 - The Royal Opera House in London opens.
1635 - Holy Roman Emperor Ferdinand II of Austria declares war on France.
1502 - Christopher Columbus lands at Honduras on his fourth, and final, voyage.