Big numbers first is not the only way to sort - look at say how they sort the speeds of runners in a race.
If it is “backwards”, it is sorted, in reverse order. If it has an element out of place it is not sorted.
It’s only when they extend to hh:mm:ss dd/mm/yyyy that it becomes assorted. They need to fully commit and either use tzmm:tzhh+ fff.ss:mm:hh dd/mm/yyyy or just use fucking iso 8601. Fuck everyone who doesn’t; fuck M$, fuck oracle, fuck humans.