How Many Days Until Pi Day 2027?
There are 149 days until Pi Day on Sunday, March 14, 2027.
149 days
until Sunday, March 14, 2027
When is Pi Day 2027?
Pi Day 2027 is on Sunday, March 14, 2027. It is held on March 14 every year, so only the weekday changes. Next year's is on Tuesday, March 14, 2028.
| Year | Date | Day |
|---|---|---|
| 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 |
About Pi Day
Pi Day is March 14, because the date written as 3/14 matches the first digits of pi, 3.14. Physicist Larry Shaw started it at the Exploratorium science museum in San Francisco in 1988. The US House of Representatives passed a resolution recognizing it in 2009. Since 2020 UNESCO has also made March 14 the International Day of Mathematics.
It is also Albert Einstein's birthday, and Stephen Hawking died on March 14, 2018. Pi Day is not a holiday, so schools, banks and offices are open. Math classes hold pi reciting contests, and bakeries and pizza chains run pie deals.
How many business days until Pi Day?
Without weekends, Pi Day is 105 weekdays away, Monday to Friday from tomorrow through Sunday, March 14. Take out the 6 federal holidays on the way, Veterans Day through Washington's Birthday, and the US count is 99 business days. Each country drops its own public holidays, so the UK gets 102, Canada 101 and Australia 101.
| Holidays used | Business days | Holidays skipped |
|---|---|---|
| United States (federal holidays) | 99 | Veterans Day, Thanksgiving Day, Christmas Day, New Year's Day, Martin Luther King Jr. Day, Washington's Birthday |
| UK (England and Wales bank holidays) | 102 | Christmas Day, Boxing Day, New Year's Day |
| Canada (federal statutory holidays) | 101 | Remembrance Day, Christmas Day, Boxing Day, New Year's Day |
| Australia (national public holidays) | 101 | Christmas Day, Boxing Day, New Year's Day, Australia Day |
Regional holidays (US states, Scotland, Canadian provinces, Australian states) are not included. Count with your own holidays.
Pi Day countdown questions
How many days until Pi Day including today?
150. Today, Friday, October 16, is the first of them; the 149 at the top starts from tomorrow. In weeks that's 21 weeks and 2 days, and from midnight tonight it's 3,576 hours.
What day is Pi Day 2027?
Sunday, March 14, 2027. In 2028 it's Tuesday, March 14.
Is Pi Day 2027 a holiday?
No, it isn't a US federal holiday, and it's a Sunday this year anyway.
What time does Pi Day start?
It starts at midnight like any other day. Some people mark the moment at 1:59 p.m., since pi continues 3.14159.
Countdown milestones to Pi Day
The Pi Day countdown reaches 100 days on Friday, December 4, 2026 and gets down to 1 day on Saturday, March 13, 2027.
| Countdown | Date |
|---|---|
| 100 days to go | Friday, December 4, 2026 |
| 75 days to go | Tuesday, December 29, 2026 |
| 50 days to go | Saturday, January 23, 2027 |
| 30 days to go | Friday, February 12, 2027 |
| 14 days to go | Sunday, February 28, 2027 |
| 7 days to go | Sunday, March 7, 2027 |
| 1 day to go | Saturday, March 13, 2027 |
Days until Pi Day from other dates
Start the count later and the number shrinks. A week from today, on Fri, Oct 23, there will be 142 days to go until Pi Day (Mar 14).
| Counting from | Days until Pi Day | Weeks and days |
|---|---|---|
| Saturday, October 17, 2026 | 148 days | 21 weeks, 1 day |
| Friday, October 23, 2026 | 142 days | 20 weeks, 2 days |
| Friday, October 30, 2026 | 135 days | 19 weeks, 2 days |
| Sunday, November 1, 2026 | 133 days | 19 weeks |
| Tuesday, December 1, 2026 | 103 days | 14 weeks, 5 days |
| Friday, January 1, 2027 | 72 days | 10 weeks, 2 days |
| Monday, February 1, 2027 | 41 days | 5 weeks, 6 days |
| Monday, March 1, 2027 | 13 days | 1 week, 6 days |
March 2027
Pi Day 2027 facts
| Date | Sunday, March 14, 2027 |
|---|---|
| Day of the week | Sunday |
| Day of the year | Day 73 of 365 |
| ISO week | Week 10 |
| Leap year | 2027 is not a leap year |
| Quarter | Q1 2027 |
| Written as | 03/14/2027 (US), 14/03/2027 (UK), 2027-03-14 (ISO) |
| Moon phase | Waxing crescent (UTC) |
| The one after | Tuesday, March 14, 2028 |
| Last time | Saturday, March 14, 2026, 216 days ago |
How this is calculated
Each midnight takes one off the number. Today is left out and the day itself is counted, so tomorrow shows as 1 day away. Clock changes for daylight saving make no difference.
In Excel or Google Sheets, type =DATE(2027,3,14)-TODAY() into a cell to get the same count; add 1 to include today.
Counted from Friday, October 16, 2026 (US Eastern time). When you open the page, it counts again from the date on your device, so it matches your own day.
Related countdowns
Cite this page
APA: ClockTotals. (2026, October 15). How Many Days Until Pi Day 2027? https://clocktotals.com/days-until/pi-day/
MLA: “How Many Days Until Pi Day 2027?” ClockTotals, 15 Oct. 2026, clocktotals.com/days-until/pi-day/.
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