Riseset has good accuracy for visual sighting. The actual sun times should be within a few seconds of the time shown. The moon and planets times are given to the second, but the actual time could be ± a minute.

The program also gives:

• The altitude and azimuth angles at the current time, or at a user specified time.
• A compass drawing showing the azimuth and altitude angles.
• Optional magnetic compass correction for azimuth angles.
• The right ascension and declination of each of the celestial bodies.
• For the Sun -- the length of the day, time of the civil, nautical, and astronomical twilight.
• The current percent visibility of the Moon.
• The date and time of the next Moon phase.
• Lunar or solar eclipse information a few days in advance of the event.