Monday 18th August 2025 | There is a Day for that!

This is our day guide for Monday August 18th 2025 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 18th 2025

Constitution Day

Find out the dates, history and traditions of Constitution Day

Never Give Up Day

Find out the dates, history and traditions of Never Give Up Day.

National Fajita Day

Those who choose to observe National Fajita Day can do so by visiting their favorite restaurant and indulging in the celebrated Mexican inspired dish.

National Science Day

August 18th is National Science Day in Thailand, commemorating King Mongkut's prediction and observation of a total solar eclipse in 1868.

National Ice Cream Pie Day 🍨

Food
USA

Find out the dates, history and traditions of National Ice Cream Pie Day

National Mail Order Catalog Day

Business
USA

While the golden age of thumbing through a thick catalog may be over, printed catalogs still have a role to play.

National Couple's Day 💑

Family
USA

Find out the dates, history and traditions of National Couple's Day.

Pinot Noir Day

Find out the dates, history and traditions of Pinot Noir Day

San Martin's Day

Argentina

San Martin is regarded as the most important Argentinian founding father, who liberated not only a part of Argentina but also helped liberate Chile and Peru along with O'Higgins and Bolívar.