[Suggestion] Change time format from AM/PM to Military

If you get confused and can't differentiate between am and pm you have bigger problems and probably shouldn't be on the internet in the first place.

I don't disagree that having Sunday as the first day of the week isn't great, but I find it funny to see someone characterize it as having "infested the Americas", when it has been the convention for thousands of years and was changed around by ISO just 3 decades ago, with just a few countries (mostly European) having decided to adopt it officially.

As Ameto noted-
Originally, the week began with Sunday and ended with Saturday, the (Jewish) day of rest. The day of rest later shifted to Sunday for most Christian branches, but the ordering of the week remained the same. While a desire to rebalance the day of rest to modern Christian conceptions had some influence on the shift to the recently conceived Monday-start format, the basis that was primarily given for the change was in a desire to make the calendar format match to modern (employment, scholastic, etc-derived) conceptions of "start of the week" and "weekend".

Traditionally, the days started and ended with sunrise and sunset, but as reliance on clocks and regulated time became more emphasized, we shifted into the current midnight-based format. While that change has been around throughout most modern conceptions, the change to the Monday-start week is recent enough to have only arisen to prominence with the past generation.

That is to say: Since the formation of the Gregorian calendar, our considerations toward time have adapted to cater to the technology and societal utility of more modern eras. The more out-of-touch a time-keeping concept appears, the more likely it is to be a legacy of another time, rather than something that popped up randomly amongst modern considerations.

In short, you can call America "behind the times", but as far as this topic goes, they didn't pick up anything that the rest of the western world didn't have first.

Well the clock face has no 0. It has 12. So it starts at 12 o'clock not 0 o'clock.

Obviously I meant, how so many people find it normal that a calendar puts Sunday as the first day of the week, not that many people actually start their week on Mondays ^^

Just as I like viewing my 5 weekdays together, I like viewing my week-end days together. Splitting the week-end is kind of confusing, the same way setting the start of the week on Wednesday or Thursday would be. So putting the Sunday right where it belongs is the first thing I do whenever I setup a new calendar.
Still, that's something really minor for a site like SG, I usually start my GAs immediately and think of their duration as "now + Xh or very few days" so I don't really care how the days are placed in this very particular case.