Board Thread:General Discussion/@comment-1526346-20170916141829/@comment-970089-20170917210147

Colouratura wrote:

Agent c wrote: So theres no confusion, I tend to go DD/MMM/YYYY - So 17/SEP/2017.

Putting the month first makes no sense at all. Americans do this because of the order of the largest maximum value.

$$Month = \{ 1, \ldots, 12 \}$$

$$Day = \{ 1, \ldots, 31 \}$$

$$Year = \{ 0, \ldots, \infty \}$$

With this definition we can see that the following is true and only true in this order.

$$\max Month < \max Day < \max Year $$

As such that

$$12 < 31 < \infty$$

TL;DR: We do it because 31 days is a larger number than 12 months and they are both smaller than infinite years. Thus we order them from least greatest maximum value to most greatest maximum value. It still doesn't make any logical sense. Just because one number can be bigger than other (But often isn't) isn't a logical reason IMO.