May 17 national days 2026
On May 17th, 2 national days fall on this date.
May 17 is a date on the 2026 national-day calendar. TheDayOf currently lists 2 observances for this date: Norway Constitution Day (Syttende Mai) and National Armed Forces Day. Open any day page for the date, history, and how to celebrate, or browse the rest of May from the month hub.
Holiday
Sunday, May 17, 2026
Norway Constitution Day (Syttende Mai)
Wave a flag for Syttende Mai — the Seventeenth of May — Norway’s Constitution Day. Schoolchildren lead the parades, brass bands fill the…
Syttende MaiNorwayConstitution Day+5 more
Discover More
National
Sunday, May 17, 2026
National Armed Forces Day
Salute our military on National Armed Forces Day! This important American observance honors all branches of the US military - Army, Navy…
armed-forcesmilitaryMay+4 more
Discover More