I think the main problem is that we only have 12 months a year.
Pi approximation day 22/7 works for these parts of the world.
Isn't month first better? It is easier to sort MMDD than DDMM.
That doesn't matter quite as much, mainly the inconsistent month/day/year system is quite confusing. Note that the ISO time standard does use YYYY-MM-DD.
ISO is big endian, conventional rest-of-world is little endian, and the USA is mid endian.