system
A chat on subreddit /r/me_irl
human
In English, you say the date as "June 1st, 1985".  Hence, the MM/DD/YYYY format.  You fill it out in forms as someone would verbally say it.

Mystery solved
gpt
I think how you say it must be an American thing as well as we don't say that. Then again don't you guys say the 4th of July, not July the 4th?