

Doesn’t that only work as a sticky note if you normally only have a few tabs anyway, though? I understand it in principle, the tab is visually right there, but in practice it’s the same as putting all the mail in an unsorted stack that you’ll totally go through later.
Sure, but the $ is signifying the following numbers refer to money. And people can write it differently than they say it. I will say “June 1st” much, much more often than “the 1st of June”, but I will also almost always write it “01 June <YEAR>”.
But the reason it is much more common in the USA to write dates as “June 1, <YEAR>” is because that is how it is often spoken here. That doesn’t need to be consistent across other speech and writing patterns, it’s just how it developed. Probably goes back to the printing press like a lot of the other oddities in writing here…