Today is special for another reason - it's Pi Day.
Pi is a number used in Maths, especially for Maths involving circles. It is written like this:
Pi Day is celebrated every year on March the 14th. Get it? March (the 3rd month), 14th => 3.14
Pi Day this year though is very special because if you add in the 15 from 2015 you get Pi to the first 4 places => 3.1415
And if you're really keen and celebrate it at 9.26am then you have Pi to 7 decimal places => 3.1415926
Happy Pi Day! Will you eat some pie to celebrate? Actually I wonder if that's where it gets its name ... what do you think?