When Is Pi Day 2027? Free Pi Day Countdown & Days Left

When is Pi Day 2027?

March 14 every year. Pi Day on March 14 (3/14) celebrates the number π, 3.14159… Physicist Larry Shaw started it at the San Francisco Exploratorium in 1988, the US House of Representatives recognised it in 2009, and since 2020 UNESCO has marked March 14 as the International Day of Mathematics.

In 2027, Pi Day falls on a Sunday. In 2026 it was on a Saturday, March 14. In 2028 it will be on a Tuesday, March 14.

How the Pi Day date is worked out

The date never changes, only the day of the week. Each year it moves one weekday later (two after a February 29), so it cycles through all seven days. In the next 10 years it lands on a Saturday or Sunday 3 times. How we calculate every date.

How many days until Pi Day in weeks, weekdays and sleeps

The countdown counts calendar days from today to Pi Day, so on the day before it shows 1. The weeks box splits that into whole weeks and days, the weekdays box counts Monday to Friday (useful for work and school planning, though public holidays are not taken out), and sleeps are the nights left. The timer counts down to midnight at the start of Pi Day in your own time zone.

Pi Day dates for the next 7 years

Year	Date	Day of the week
2026	March 14, 2026	Saturday
2027	March 14, 2027	Sunday
2028	March 14, 2028	Tuesday
2029	March 14, 2029	Wednesday
2030	March 14, 2030	Thursday
2031	March 14, 2031	Friday
2032	March 14, 2032	Sunday

Is Pi Day a federal holiday?

No. Pi Day is an observance, not a federal or public holiday, so schools, businesses, banks and the post office are open as normal.

Planning tip

Schools often hold pi recitation contests and pie sales, and many bakeries and pizza chains run 3.14-themed deals on the day.

Frequently asked questions

When is Pi Day 2027?

Pi Day 2027 is on Sunday, March 14, 2027. The rule: March 14 every year.

How many days until Pi Day?

The countdown at the top of this page shows the exact number of days, hours, minutes and seconds until Pi Day 2027 (Sunday, March 14, 2027), worked out live in your own time zone.

How many weeks until Pi Day?

Divide the days in the countdown by seven: the "Weeks" box above shows the whole weeks and the days left over, so you can plan week by week.

Is Pi Day a federal holiday?

No. Pi Day is an observance, not a federal or public holiday, so schools, businesses, banks and the post office are open as normal.

Why is Pi Day on March 14?

Because the US date 3/14 matches the first digits of pi, 3.14. It is also Albert Einstein's birthday.

Related countdowns

Around the same time of year: how many days until Eid al-Fitr, how many days until Daylight Saving Time Starts, how many days until St. Patrick's Day and how many days until spring. See days until March and every holiday in March, or make a countdown to any date.

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