You can use the following generator to create a countdown clock that will count down the seconds, minutes, hours, days remaining until your target date.
Steps
Fill in the required target Date and target Time information
Generate the source (button at bottom)
Preview your script (button at bottom)
Copy and Paste the 'Source Code' into your HTML page
Note
If you want to change the size, font, or color you can edit the last line of your generated code and add a style="" property like: <div id="countbox" style="font:14pt Arial; color:#FF0000;"></div>