For those of you using date/month, we'll see you back here on April 31st.
For those of you preferring fractions, we'll see you on July 22nd.
For those of you who try to make things universal by writing things like 14MAR13, y'all just screwed yourselves out of a holiday. You're not invited to my mole day party either.
So basically you can justify celebrating 3 different types of pi days. I think that's excellent. I like pi.