Editing Pi Day (section)

== History ==
In 1988, the earliest known official or large-scale celebration of Pi Day was organized by [[Larry Shaw (Pi)|Larry Shaw]] at the [[Exploratorium|San Francisco Exploratorium]],<ref>{{Cite web |last=Berton |first=Justin |date=March 11, 2009 |title=Any way you slice it, pi's transcendental |url=https://www.sfgate.com/science/article/Any-way-you-slice-it-pi-s-transcendental-3169091.php |access-date=March 18, 2011 |website=[[San Francisco Chronicle]]}}</ref> where Shaw worked as a [[physicist]],<ref name="ABC – Science – 10 Mar 2011 – infinite appeal of pi">{{Cite web |last=Borwein |first=Jonathan |author-link=Jonathan Borwein |date=March 10, 2011 |title=The infinite appeal of pi |url=http://www.abc.net.au/science/articles/2011/03/10/3158045.htm?site=science/opinion |access-date=March 13, 2011 |publisher=[[Australian Broadcasting Corporation]]}}</ref> with staff and public marching around one of its circular spaces, then consuming fruit pies.<ref name="fresnobee">{{Cite news |last=Apollo |first=Adrian |date=March 10, 2007 |title=A place where learning pi is a piece of cake |work=[[The Fresno Bee]] |url=http://apollotutoring.com/pi_day.pdf}}</ref> The Exploratorium continues to hold Pi Day celebrations.<ref name="exploratorium">{{Cite web |title=Exploratorium 22nd Annual Pi Day |url=http://www.exploratorium.edu/pi/index.html |url-status=dead |archive-url=https://web.archive.org/web/20110314012746/http://www.exploratorium.edu/pi/index.html |archive-date=March 14, 2011 |access-date=January 31, 2011 |publisher=Exploratorium}}</ref>

On March 12, 2009, the U.S. House of Representatives passed a [[non-binding resolution]] ([[wikisource:H. RES. 224 Supporting the designation of Pi Day, and for other purposes|111 H. Res. 224]]),<ref name="HORRes" /> recognizing March 14, 2009, as National Pi Day.<ref>{{Cite news |last=McCullagh |first=Declan |date=March 11, 2009 |title=National Pi Day? Congress makes it official |work=Politics and Law |publisher=[[CNET News]] |url=http://news.cnet.com/8301-13578_3-10194354-38.html?part=rss&subj=news&tag=2547-1_3-0-5 |access-date=March 14, 2009}}</ref> For Pi Day 2010, Google presented a [[Google Doodle]] celebrating the holiday, with the word Google laid over images of circles and pi symbols;<ref name="GoogleDoodle">{{Cite web |title=Pi Day |url=https://doodles.google/doodle/pi-day/ |access-date=October 9, 2012 |website=Google Doodles}}</ref> and for the 30th anniversary in 2018, it was a [[Dominique Ansel]] pie with the [[circumference]] divided by its [[diameter]].<ref>{{Cite web |title=30th Anniversary of Pi Day! |url=https://doodles.google/doodle/30th-anniversary-of-pi-day/ |access-date=March 19, 2018 |website=www.google.com |language=en}}</ref>

Some observed the entire month of March 2014 (3/14) as "Pi Month".<ref>{{Cite magazine |last=Main |first=Douglas |date=March 14, 2014 |title=It's Not Just Pi Day, It's Pi Month! |url=http://www.popsci.com/article/science/its-not-just-pi-day-its-pi-month |magazine=Popular Science |access-date=July 22, 2014}}</ref><ref>{{Cite web |date=March 11, 2014 |title=Pi Month Celebration & Circle of Discovery Award Presentation &#124; College of Computer, Mathematical, and Natural Sciences |work=College of Computer, Mathematical, and Natural Sciences |url=http://cmns.umd.edu/news-events/events/1774 |access-date=July 22, 2014 |publisher=Cmns.umd.edu |author1=Jencasa }}</ref> In the year 2015, March 14 was celebrated as "Super Pi Day".<ref>{{Cite web |last=Mack |first=Eric |date=March 14, 2015 |title=Celebrate The Only Super Pi Day Of The Century |url=https://www.forbes.com/sites/ericmack/2015/03/14/happy-super-pi-day-heres-how-to-celebrate/ |access-date=March 14, 2019 |website=Forbes |language=en}}</ref> It had special significance, as the date is written as 3/14/15 in month/day/year format. At 9:26:53, the date and time together represented the first ten digits of {{pi}},<ref>{{Cite web |last=Ro |first=Sam |date=March 13, 2014 |title=March 14, 2015 Will Be A Once-In-A-Century Thrill For Math Geeks |url=http://www.businessinsider.com/pi-day-2015-2014-3 |access-date=March 13, 2014 |website=Business Insider}}</ref> and later that second, "Pi Instant" represented all of {{pi}}'s digits.<ref>{{Cite journal |last=Rosenthal |first=Jeffrey S. |url=http://probability.ca/jeff/writing/PiInstant.html |title=Pi Instant |date=February 2015 |journal=Math Horizons |volume=22 |page=22 |doi=10.4169/mathhorizons.22.3.22 |issue=3 |s2cid=218542599}}</ref>