Are you a math/science geek? How will you celebrate pi day? Don't forget square root day next month (4/4/16): http://abcnews.go.com/Technology/pi-day-2016-extra-special/story?id=37630134 Why 'Pi Day' 2016 Is Extra Special By ALYSSA NEWCOMB Mar 14, 2016, 9:43 AM ET PHOTO: The "Pi" symbol, shown in this undated photo, is a mathematical constant that is the ratio of a circles circumference to its diameter.Getty Images WATCH Solve Pi Day Puzzle for 3.14 Years of Free Pizza 1K SHARES Email Math nerds likely had already circled today on the calendar, but it's worth noting this year's "Pi Day" is a once-in-a-century occurrence. March 14 -- or 3/14 -- celebrates the mathematical constant of pi. Pi represents the ratio of circumference of a circle divided by its diameter. While it is often abbreviated as 3.14, pi has an infinite number of digits beyond the decimal point, starting with 3.141592653. Pi Day: Circle Your Calendar -- Once-in-a-Century Day Coming This Weekend Last year's Pi Day was one to celebrate since it was 3/14/15, perfectly matching the first numbers past the decimal point of pi. Last year, hardcore math fans even started celebrating the day at exactly 9:26 a.m. and 53 seconds. There's a big reason to celebrate this year too -- math enthusiasts are calling today "Rounded Pi Day." When rounding pi to the ten-thousandth (that's four numbers past the decimal point), it comes out to 3.1416, matching today's date -- March 14, 2016. And if you need any more reason to geek out about March 14, here's one: it's Albert Einstein's 137th birthday. http://news.yahoo.com/pi-day-2016-freebies-deals-120800993.html Pi Day 2016: Freebies, Deals and Yes, Free Pies (Including the Pizza Variety) Mic By Andrew Leung 6 hours ago  Math geeks and deal hunters, unite! Pi Day is imminent. On Monday, March 14th, a number of places will be offering deals to celebrate the irrational holiday, even though this year's Pi Day isn't as epic as last year's. Read more: Finally, the Perfect App for People Who Hate Math 1. Many national pizza chains are either offering Pi Day-centric deals or have existing discounts that overlap Pi Day. Either way, you'll get discounted pizza pies! View gallery .Pi Day 2016: Freebies, Deals and Yes, Free Pies (Including the Pizza Variety) Source: Justin Sullivan/Getty Images 2. What if pizza is not enough, and you happen to be desperate for a wedding venue in the DC area? The Washingtonian reported that the &pizza chain plans to turn their Columbia Heights location into a "Vegas-style" wedding chapel, which will include "free music, flowers, food and a legal wedding officiant." 3. If you're in San Francisco, stop by the Exploratorium, where National Pi Day was first established 28 years ago. The museum will offer free admission and a full day of activities to celebrate Pi Day. View gallery .Pi Day 2016: Freebies, Deals and Yes, Free Pies (Including the Pizza Variety) Source: Ann Bartkowski/Wikimedia Commons 4. If you're in Princeton, New Jersey, you have a plethora of options from local merchants for both food and activities. The town takes Pi Day very seriously, celebrating it in tandem with Albert Einstein's birthday. View gallery .Pi Day 2016: Freebies, Deals and Yes, Free Pies (Including the Pizza Variety) Source: AFP/Getty Images 5. Finally, if you spend more than $25 at ThinkGeek.com, you get this Pi Day T-shirt for free. View gallery .Pi Day 2016: Freebies, Deals and Yes, Free Pies (Including the Pizza Variety) Source: Thinkgeek
