These clocks were designed for use as information and time displays during examinations and similar events. All are entirely self-contrained HTML files and may be safely downloaded and used locally. Simply open the file, from here or local copy, and press your brower's full-screen key (Usually F11). Make sure you have disabled the screensaver and anything else which may interrupt the display.

A minimalist clock.
A minimalist clock plus with some space at the sides in which additional information can be entered, such as exam start/stop times.
A simple countdown in both numerical and graphical display. Plays a sound upon completion.
Analog and digital clocks, plus information - a potentially good clock for exams.
Alternative, triptych version of the exam clock.
A reduced-size clock to allow more text space, for use when multiple exams are taking place.