To constantly watch a clock on a wall or on the clock to keep pace with time can be distracting and possibly get rid of as rude during a presentation. Watch the presentation and continue focusing by inserting a clock in your presentation.
Inserting a Clock in PowerPoint
There are a few ways to redo this. The first uses a built-in PowerPoint feature that allows you to discreetly display the time and date in the presentation. This method is not a living method and only updates the time / date when you change the slide show during the presentation. It is most useful if you want to keep track of time.
The second method is to add a live clock that can be downloaded from several third party websites. Using this method, you can view real-time updates during the presentation ̵
PowerPoint's built-in function
To use PowerPoint's built-in function, continue and open the PowerPoint presentation we are going to work with and go over
Here you find "Text" – section and select "Date and time".
 Once selected, the "Header and Footer" window appears. Select the box next to "Date and time" and select "Automatically update." This makes it possible to update the date and time each time you change images. Now select the arrow next to the displayed date.
This will give you several different date / time variations for you to choose from. Choose the one you think is best to use in your presentation. In this example, we use the third option from the bottom, showing hour, minute, and second in a 24-hour clock.
If you "If you want to release this from the title chart, select the checkbox next to" Do not show on the title image ". When done, click" Use for all "to insert the clock on all your pictures. 
Now you see the date / time variation that you selected appears at the bottom left of the presentation. Time and date displayed are the same as the system clock , so make sure it is correct.
Using Online Watches for PowerPoint
As we said before, several different websites provide flash-based watches like you can use for your presentation.We use a clock downloaded from Flash-Clock in this example, but feel free to browse and find a website you want, because the basic prerequisite for doing this work is the same.
t ll Flash Clock website and make sure Adobe Flash Player is enabled. When you are there you will find a large gallery with different clocks to choose from, from analog to digital and even antique. Choose the type you want to use. We take a look at the digital options.
Browse through the large gallery of available watches and find one you like. Once you find one, click on the "HTML Tag Code" link located above the clock.
Here you find the embed code. Select and copy everything from http: // to .swf, as shown in the picture below.
Skip to the address bar, paste the code, and then press "Enter." If you use Chrome, you will receive a message saying that this type of file can damage your computer. Since this is from a trusted site, you are sure to continue and click "Hold". This will download the .swf (Shockwave Flash Object) file to your computer.
To insert the file into PowerPoint, simply drag and drop. Just as when you embed a YouTube video, you first see a black box first. That's good, because you will see the live clock during the presentation. Keep changing and resizing the clock.
When you are satisfied with its size and position, copy and paste the box into each slide.
Now that you play the presentation, the clock will appear in real time!
Although this option may appear a little more, it will allow you to get a real-time view of the current time throughout the presentation.