Test timer
If your test has a time limit set, a timer displays the remaining time you have to complete your test.

If the test author makes the timer hideable, a button displays for you to hide the time.

When you select this option, the time is replaced by a clock icon.

The system administrator may have set the timer to reappear towards the end of the test, for example, they could set it to reappear 5 minutes before the end, although this time may vary.