This date format works for just as much of the year as DD/MM/YYYY though, and is just as ambiguous as the other format is if you don't know who the author is.
What does a full timestamp look like? For consistency I hope it goes all-in on being little-endian:
ss:mm:HH DD-MM-YYYYSo providing the day before the month does not provide any contextual advantage.
However, in most cases, the year is not necessary for contextual meaning.
So the alternatives are month + day or month + day and year.
If you don’t understand why something is done, but it’s been done for a long time, chances are that it evolved to be that way for a reason.
If something is arbitrarily dictated to replace an evolved system, there is most likely some information or practical purpose that is lost.