Actually, @Abigail is correct. The default depends a lot on where you live.
I live in the US and here mm/dd/yyyy is by far the most common. However, I do have friends and Europe so I do know that they commonly see dd-mm-yyyy. I admit that I did not know about Asia using year/month/day, I am a computer programmer and with programming yyyy-mm-dd is common because that is the only format mentioned here that does not need to be changed in order for programs to sort the date chronologically.
Basically I asked the question for verification. Logically, I assumed the date was written in European format as using the common format for the US was a date that had already past; although a typo was still a small possibility.