Occultation Timer is freeware program designed to train yourself before observing of star occultations by asteroids.

Download Occultation Timer installer executable (345kb) and run it for installation.

Run Occultation Timer.

Press
F4 for options
F7 for generation of stars
F9 for starting test
F8 for finishing test

Sample screenshots:

Testing	Statistics

E-mail me if you have any questions.