Happy Pi Approximation Day It’s that time of the year again - Pi Approximation Day ( π ). I’m wearing my special PI t-shirt to celebrate I love the spiffy design For my American friends wondering what I am on about, it’s to do with the way the date is written – 22/7 – LOL! Technorati Tags: PI Day, PI Approximation Day, 22/7 Comments Anonymous July 22, 2008 had an interesting discussion with@yourdon on twitter yesterday, based on the Indiana PI Bill - http://bit.ly/Indiana_PI and http://bit.ly/bOUap Additional resources Last updated on 2008-07-22