Pretty sure that iso standard of yours specifies using what you call military time, or 24 hour time system, which USA doesn’t use widely, so even they don’t use this standard
I propose that during a 113 day period we have exactly 355 pi days. That would be an avrage of 3,14159 pi days per year
We could organize stuff earlier… If we weren’t either in work or sleeping after a full week of getting up in the morning to “be productive members of society” !