1: ( CNN ) Pi Day is going to be extra special this year , as 2015 stretches the symbolic March 14 celebration out a little longer to 3.1415 . 2: And if you mark pi at 9:26.53 in the morning or night , you 're just a little more in line with the celebrated irrational number that never ends . 3: Pi Day is celebrated March 14 in honor of the famed irrational number .
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