https://free-timer.com/

A free, full-featured, and lightweight timer for Windows

The Free Timer program allows you to create countdown timers that
display the remaining time as a colored section of a clock face.

You can set the time in seconds, minutes, and hours. The colored section
of the clock face will display the time corresponding to the interval
you set:

* If the interval is *one minute or less*, the timer counts in seconds
(a full circle is 60 seconds).
* If the interval is *one hour or less*, the timer counts in minutes
(a full circle is 60 minutes).
* If the interval is *12 hours or less*, the timer counts in hours
(a full circle is 12 hours).
* If the interval is *more than 12 hours*, the specified color will
completely cover the dial. As for the countdown, the colored section
will steadily decrease in size according to the remaining time.

If you need to run several timers simultaneously, you can run the
program as many times as you need. You can also change the colors of the
timers to distinguish timers from each other.

Works with Linux.

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Pity the fool who followed his GPS over the cliff