Umm. It's an order of ascendance.
Time, Day, Month, Year. Start, Up, Up Up.
Then in the American system, you have Start, Up, Down, Up Two. Makes no sense, see? :d
But then we have number systems that go 1, 100, 1000, 10000 whereas you colonials still insist on using 1/32, 1/16, 1/8, 1/4, 1/2, 1, 12, 3, 22, 80... It's all carefully planned to ensure that no-one else can understand so you don't have to work with anyone outside your own borders.

(And yes, I am joking. I work on the UK Heavy Rail network, where we measure in miles and metres and position things according to where a milepost would be, except that it's either in the wrong place or doesn't exist at all. It will never cease to amaze me when we actually build something that works. And scarily? Chances are it's better than was there before!!!)