If you see dates in a specific format (for example, the US format) and would like to change (you want the UK format), you can edit your browser's language.

Go to your browser's settings and pick a different language.

If you're using Chrome, follow the instructions below:

Open the browser settings, and in the advanced section scroll down to find Languages. Open Language and Input Settings and add the language or language+region choice you want from the list available.