This template makes a blue box appear that includes the current time and the amount of articles on Wikipedia at this moment. Put this at the top of your user page or your talk page. It is meant as a user space page header.
Note that this template adheres to the preferences of the user viewing the page. If you are comfortable with the American date format (april 28, 2017) but are viewing the Commonwealth format (28 april 2017), then you may change it by going to your preferences, and clicking on the Date and Time tab.