🥧 Pi Day 2027
Date Verification
- Status
- Established Date
- Date used
- 14 March 2027
- Date rule
- Fixed Gregorian date
- Checked
- 2026-09-11
- Primary source
- Fixed Gregorian calendar rule
The observance uses the same Gregorian month and day each year.
What Pi Day is
3/14 in American date notation, celebrated in schools and physics departments since Larry Shaw started it at San Francisco’s Exploratorium in 1988.
How the Date is Determined
The countdown uses the date recorded above. This entry uses a fixed Gregorian month and day. The observance date is kept separate from substitute employee/public-holiday days that a government may announce.
It is grouped under Cultural for browsing; that label does not change how its date is verified.
What Happens After This Occurrence
After this occurrence passes, the same evergreen page can calculate the next date from its deterministic calendar rule. See the full list of upcoming events, or use the countdown timer for a date of your own.
| Event | Date | Days |
|---|---|---|
| 🕊️ United Nations Day 2026 | 24 Oct 2026 | 0 |
| 🇦🇹 Austria National Day 2026 | 26 Oct 2026 | 2 |
| 🇹🇷 Turkey Republic Day 2026 | 29 Oct 2026 | 5 |
| 🕯️ All Saints’ Day 2026 | 1 Nov 2026 | 8 |
| 🌼 All Souls’ Day 2026 | 2 Nov 2026 | 9 |
Keep Exploring World Clock
This event uses an evergreen URL. The visible year can change when a later occurrence has been verified, while old year-bearing links are redirected to the canonical event page.
- event countdowns — live countdowns to holidays and festivals worldwide
- countdown timer — count down from any length you set
- World Clock — pick a country or city and read its clock, offset and daylight saving rules
- time zone converter — turn a time in one place into the same instant in another