I'm in the US, and this is what I do, mostly because if I have to include a date in a filename, this is the best format to use. I think it's a good idea to use

I'm in the US, and this is what I do, mostly because if I have to include a date in a filename, this is the best format to use. I think it's a good idea to use the same date format consistently, so it's also the one I use in other contexts. It has never caused any real confusion. Even people who've never seen this format before seem to intuit that when they see the year first, the next number will be the month. That said, there are some places where the longhand form (e.g. January 1, 2025) is culturally expected and in those situation, I follow the expectation.