Day Guide for Monday May 18th 2026 What are the holidays on May 18th 2026?

This is our day guide for Monday May 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 May 18th 2026

Regional

Canada (regional): Victoria Day

Victoria Day celebrates the birthday of Queen Victoria. Following the death of Queen Victoria, May 24th was decreed as Empire Day across the British Empire

Regional

Canada (regional): National Patriots' Day

National Patriots' Day (Journée nationale des patriotes) is a commemoration of the Lower Canada Rebellion of 1837

Cayman Islands: Discovery Day

Commemorates the discovery of the Sister Islands of Cayman Brac and Little Cayman by Christopher Columbus in 1503

Colombia: Ascension Day Holiday (in lieu)

Commemorates the ascension of Jesus into heaven forty two days after his crucifixion

Haiti: Flag and Universities' Day

Celebrates Haiti's educational system and commemorates the creation of the flag at the 1803 Arcahaye Conference.

Regional

Malaysia (regional): Birthday of the Raja of Perlis (in lieu)

The Raja of Perlis , Tuanku Syed Sirajuddin was born in Arau, Perlis on May 17th 1943

Turkmenistan: Constitution and Flag Day

Marks Turkmenistan's declaration of independence from the Soviet Union in 1991

Public sector only

Uruguay: Battle of Las Piedras

The Battle of Las Piedras was fought on May 18th 1811 as part of the Uruguayan struggle for independence

Observances on May 18th 2026

International: International Day for Museums

Find out the dates, history and traditions of International Day for Museums

USA: National Cheese Souffle Day

Find out the dates, history and traditions of National Cheese Souffle Day

USA: National HIV Vaccine Awareness Day

Find out the dates, history and traditions of National HIV Vaccine Awareness Day

USA: National No Dirty Dishes Day

Find out the dates, history and traditions of National No Dirty Dishes Day

USA: National Visit Your Relatives Day

Find out the dates, history and traditions of National Visit Your Relatives Day

United Kingdom: National Numeracy Day

Nearly half the working-age population of the UK have the numeracy skills of a primary school child.

International: World Therapeutic Horticulture Day

Celebrate the healing touch of nature on World Therapeutic Horticulture Day and embrace the benefits of gardening for well-being.

May 17th 2026 | Go to Today | May 19th 2026

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General Information for May 18th 2026
There are 8 public holidays today.
Day 138 of 2026
227 days left in 2026
Week 21 of the year
On this Day in History
2005 - A second photo from the Hubble Space Telescope confirms that Pluto has two additional moons, Nix and Hydra.
1980 - Vocalist/lyricist with Joy Division Ian Curtis commits suicide.
1949 - Rick Wakeman of the band Yes is born.
1804 - Napoleon Bonaparte is crowned Emperor of France.