Day Guide for Thursday June 18th 2026 What are the holidays on June 18th 2026?

This is our day guide for Thursday June 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 June 18th 2026

Cambodia: King's Mothers' Birthday

Queen Mother Norodom Monineath was born on June 18th 1936.

Regional

India (regional): Martyrdom Day of Sri Guru Arjun Dev Ji

Guru Arjun Dev was the fifth Sikh Guru and the first Sikh martyr, killed in 1606. ☬

Oman: Hijri New Year

Marks Islamic New Year and the Prophet's journey from Mecca to Medina in 622AD.

Seychelles: Constitutional Day

Marks the adoption of a multi-party democratic constitution in 1993

Observances on June 18th 2026

USA: National Dump the Pump Day

First started in June 2006, this national day highlights public transportation as a convenient travel option that also helps people save money.

United Kingdom: Clean Air Day

Clean Air Day is the UK's largest air pollution campaign, engaging thousands of people at hundreds of events, and reaching millions more through the media.

United Kingdom: International Picnic Day

Find out the dates, history and traditions of International Picnic Day

United Kingdom: International Sushi Day

Find out the dates, history and traditions of International Sushi Day

USA: National Go Fishing Day

Find out the dates, history and traditions of National Go Fishing Day

USA: National Splurge Day

Go on, treat yourself today - you deserve it!

United Nations: Sustainable Gastronomy Day 

Sustainable gastronomy, therefore, means cuisine that takes into account where the ingredients are from, how the food is grown and how it gets to our markets and eventually to our plates.

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General Information for June 18th 2026
There are 4 public holidays today.
Day 169 of 2026
196 days left in 2026
Week 25 of the year
On this Day in History
1983 - Sally Ride becomes the first American woman to orbit the Earth.
1981 - The AIDS epidemic is formally recognised by medical professionals in San Francisco, California.
1780 - In England, the Derby horse race is held for the first time.
1178 - Five men in Canterbury see an apparition, thought to be The Giordano Bruno Crater.