Recorded history by calendar date
What happened on March 17?
Explore notable historical events, births, deaths, and observances connected with March 17. This page organizes a useful shortlist from recorded history so the date is easy to scan, cite, and explore further.
Looking for the weekday and calendar conversions too? View March 17, 2026 for the same month and day in the closest available year.
Events
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On This Day in History
Major events, milestones, and turning points that happened on this date.
Curated highlights
The shortlist below is ordered to surface the most notable items first while keeping the page readable. When a holiday or observance is relevant, you’ll also see direct links into the related countdown pages.
Historical Events
No curated event entries are in this shortlist for this date yet.
Births
No curated birth entries are in this shortlist for this date yet.
Deaths
No curated death entries are in this shortlist for this date yet.
Observances / Holidays
March 17
St. Patrick’s Day
A cultural and religious holiday celebrating the patron saint of Ireland, observed with parades and festivities worldwide.
Why dates can carry multiple meanings
A single month-day can connect political milestones, scientific breakthroughs, notable lives, and annual observances. That is why Whatistheday groups this archive into events, births, deaths, and observances rather than mixing everything into one long timeline.
Some observances are fixed on the same Gregorian date every year, while others move because they follow lunar, lunisolar, or rule-based calendars. For calculation details, see the methodology page.
How long ago?
Curious how many days have passed since iconic moments in history? Browse our Days Since directory — live counters for the Moon landing, the fall of the Berlin Wall, 9/11, and more.
Who was born on March 17?
See famous people born on this date — filterable by footballers, actors, musicians, scientists and more. View birthdays for March 17 →