Name change dates are messing up. I don't know if I'm just being stupid, but it keeps changing.

I was trying to change my name, because it has been 30 days since that last time I changed it. Well, look at what I found: http://gyazo.com/6df70c916566b15877503f3b39bc041e
http://gyazo.com/d99e27d9e0b67c499d175db98bf19c29
http://gyazo.com/87609bfe51342a53fd1afb71ce9313c0

It has been 30 days since I changed my name, but it's saying I need to wait 31 days. I know it doesn't seem like a big bug or problem, but I wanted Mojang to be aware that this is happening. Thanks! -iWaph