Dates are formatted differently depending on the country. If you find that the dates are displaying in a format that you are not familiar with or do not prefer, you can change it by changing your locale.
Go to My Settings – > Personal -> Language & Time Zones
Change Locale and save.
I logged into my org and entered a date. It displayed as 29/11/2016. (DD/MM/YYYY) Although I can understand what it means, it is not my preferred way of viewing dates.
So I went to My Settings -> Personal -> Language & Time Zones
Here is what I saw:
I changed Locale to something more appropriate for me
So going back to the same record the date now looks like this: