# pi day 2015

Saturday 14 March 2015

If you accept the American style of writing a date (month first, then the day) then today you'll be celebrating **Day **- when the date **3.14** matches the first few digits of . But this year it's a bit more special because including the last two digits of the year matches the first five digits **3.1415**. And then even more special at 26 minutes and 53 seconds past 9 o'clock (am or pm, I suppose) when the date and time will match the first 10 digits of . Here are a couple of nice articles from today's newspapers about **Day **- one of them by **Alex Bellos** the author of ** Alex's Adventures in Numberland** and

*, two very good books about mathematics.*

**Alex Through the Looking Glass: How Life Reflects Numbers and Numbers Reflect Life****Pi Day 2015: a sweet treat for maths fans** (The Guardian), by Alex Bellos

**Don’t Expect Math to Make Sense: On Pi Day, Celebrate Math’s Enigmas** (New York Times) by Manil Suri (a mathematics professor at the University of Maryland)

From reading the article by Alex Bellos I learned that the last **Day **that was "better" than today was March 14, 1592. On that day at 53 minutes and 58 seconds past 6 o'clock the date and time 3.14.1592, 6:53:58 matched the first 12 digits of . Ask your students what famous mathematicians and scientists were alive at that time. Of course, there were no Americans around to write the date in a way which allows us to celebrate a very special number.

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