{"id":4770,"canonical_url":"https://www.kudos365.com/today-in-history/events/1988ce-mar-14--4770","name":"1988 CE, March 14","year":1988,"era":"CE","month":3,"day":14,"url":"https://www.kudos365.com/today-in-history/events/1988ce-mar-14--4770","iso-date":"1988-03-14","precision":"year-month-day","description":"\u003cp\u003eThe Pi Day celebration, of the never-ending mathematical constant \u003ca href=\"https://www.britannica.com/science/pi-mathematics\" class=\"md-crosslink \" data-show-preview=\"true\"\u003epi (π)\u003c/a\u003e, is started on March 14, 1988, by American physicist Larry Shaw, who worked at the Exploratorium, a science museum in San Francisco. The celebration began on 3/14 at 1:59 pm (for: 3.14159)\u003cbr\u003e\u003c/p\u003e","additional_details":"\u003cp\u003e\u003cstrong\u003eDefinition:\u003c/strong\u003e \u003cbr\u003ePi is the never-ending mathematical constant (pi (π)), which relates the circumference C of a circle to its diameter d; that is,π = C/d. The numerical value of pi to five decimal places is 3.14159.\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFormal Recognitions:\u003c/strong\u003e\u003cbr\u003eOn March 12, 2009, the U.S. House of Representatives recognized March 14 as National Pi Day.\u003cbr\u003eOn November 26, 2019, UNESCO designated Pi Day as the International Day of Mathematics\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eCoincidences:\u003c/strong\u003e\u003cbr\u003ePi Day shares the calendar with two of history's most famous physicists: \u003cbr\u003e~ Albert Einstein’s Birthday: Born on March 14, 1879.\u003cbr\u003e~ Stephen Hawking’s Death: Passed away on March 14, 2018.\u003cbr\u003e~ Super Pi Day: The date 3/14/15 at 9:26:53 AM/PM represents the first ten digits of Pi.\u003c/p\u003e","photo":"https://k365fs.imgix.net/ajWmIgu1S966PUEc8Oez_Greek%20letter%20Pi%20-%20PD-R.png?auto=format,compress\u0026fit=clip\u0026max-w=1600","photo_width":1212,"photo_height":647,"created_at":"2026-03-15T10:55:11-07:00","updated_at":"2026-03-15T11:52:13-07:00","breadcrumbs":{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"March History","item":"https://www.kudos365.com/today-in-history/march"},{"@type":"ListItem","position":2,"name":"March 14","item":"https://www.kudos365.com/today-in-history/march-14"}]},"schema":{"@context":"https://schema.org","@type":"Thing","@id":"https://www.kudos365.com/today-in-history/events/1988ce-mar-14--4770#eventK365","name":"1988 CE, March 14","headline":"The Pi Day celebration, of the never-ending mathematical constant pi (π), is started on March 14, 1988, by... - 1988 CE","description":"The Pi Day celebration, of the never-ending mathematical constant pi (π), is started on March 14, 1988, by American physicist Larry Shaw, who worked at the...","url":"https://www.kudos365.com/today-in-history/events/1988ce-mar-14--4770","additionalType":"HistoricalEvent","inLanguage":"en","datePublished":"2026-03-15T10:55:11-07:00","dateModified":"2026-03-15T11:52:13-07:00","publisher":{"@id":"https://www.kudos365.com/#organizationK365"},"image":{"@type":"ImageObject","url":"https://k365fs.imgix.net/ajWmIgu1S966PUEc8Oez_Greek%20letter%20Pi%20-%20PD-R.png?auto=format,compress\u0026fit=clip\u0026max-w=1600","width":1212,"height":647},"temporalCoverage":"1988-03-14","isPartOf":[{"@id":"https://www.kudos365.com/#websiteK365"},{"@type":"CollectionPage","@id":"https://www.kudos365.com/today-in-history/march","name":"What Happened in March History"},{"@type":"CollectionPage","@id":"https://www.kudos365.com/today-in-history/march-14#pageK365","name":"What Happened on March 14"}]}}