Day Guide for Monday August 10th 2026

This is our day guide for Monday August 10th 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?

Observances on August 10th 2026

International Biodiesel Day

Biodiesel reduces emissions by more than 50 percent compared to petroleum.

International Update Your Bio Day

When was the last time you updated any of your social media bios?

World Lion Day 🦁

The main goal of the holiday is to spread information about the problems faced by this big cat and to propose ways to solve them.

International Vlogging Day

Find out the dates, history and traditions of International Vlogging Day.

Abai Day

Honours a famous Kazakh poet from the 19th century.

National Lazy Day

General
USA

We were going to do a big feature on National Lazy Day, but y'know... maybe next year.

National S’mores Day

Food
USA

Find out the dates, history and traditions of National S’mores Day

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General Information for August 10th 2026

There are 7 observances on this day.
430 days to go.
Day 222 of 2026
143 days left in 2026
Week 33 of the year

Moon phase

On this Day in History

1990 - The Magellan space probe reaches Venus.
1969 - A day after murdering Sharon Tate and four others, members of Charles Manson's cult kill Leno and Rosemary LaBianca.
1680 - The first confirmed tornado in 'America' since the arrival of Europeans kills a servant in Cambridge, Massachusetts.
1519 - Ferdinand Magellan sets sail from Sanlúcar de Barrameda with about 270 men on his expedition to circumnavigate the globe.
1268 - Battle of Tagliacozzo: The army of Charles of Anjou defeats the Ghibellines supporters of Conradin of Hohenstaufen marking the fall of the Hohenstaufen family from the Imperial and Sicilian thrones, and leading to the new chapter of Angevin dominat