The only birthdate that you need to add a zero

punkynpye thought this was worth mentioning said

So today is my birthday, and as we’ve gotten farther into the computer age, I’ve noticed I now have to add a 0 when giving out my birthdate, at the beginning, or January turns into Dec. It’s 1-23, but if you don’t add the 0 at the beginning, in turns into 12-3. The pharmacy asked me so much if it was Dec 3, that I now add the 0. People always look at me funny when I say 0123. It’s weird.