Constantly glancing at a clock on a wall or at your watch to keep up with the time can be distracting and possibly come off as rude during a presentation. Keep your eyes on the presentation and remain focused by inserting a clock in your presentation.
Inserting a Clock in PowerPoint
There are a couple of ways to go about doing this. The first is using a built-in PowerPoint function that allows you to unobtrusively show the time and date in the presentation. This method isn’t a live method and only updates the time/date once you switch slides during the presentation. It’s mostly handy if you want to keep an eye on the time.
The second method is adding a live clock, downloadable from several different third-party websites. Using this method allows you to show real-time updates during the presentation—not only when you switch slides. It’s probably best used when you want to keep your audience’s eyes on the presentation.
PowerPoint’s Built-in Function
To use PowerPoint’s built-in function, go ahead and open the PowerPoint presentation we will be working with and head over to the “Insert” tab.
Here, find the “Text” section and select “Date & Time.”
Once selected, the “Header and Footer” window will appear. Here, check the box next to “Date and time” and select “Update automatically.” This will allow the date and time to update each time you change slides. Now, select the arrow next to the displayed date.
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Source : How to Insert a Clock in PowerPoint