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.

Example:

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: