By using the simple web-form (image above) on the first page, the observer can produce a list of observable comets for a specific night.

The program calculates relevant observing times, and a list of observable comets, that meet the defined settings in the form.

The calculated data is displayed on screen:

The program calculates times for a specified location and time zone, that can be specified by the user in the user profile.

If the location and time zone are not defined by the user, the default location Observatory Crni Vrh and GMT time zone are used for the calculating.