Currently the date formats default to MDY format and there is no way to change this. Since most of the world uses DMY format  it doesn't make sense to have MDY as a fixed format. It's confusing especially with ambiguous dates (e.g. 10/4/2018 could be 10th April or 4th October).
There should be a localisation option for your user profile that should format the date in the UI either by auto detection or fixed profile-based localisation.
At the very least it should auto-detect based on user locale.