Dione and its shadow cross Saturn’s disk this evening, while several more of the ringed planet’s moons stand nearby.

| Published: October 25, 2026

Dione and its tiny shadow transit Saturn early in the evening on October 25. Credit: Stellarium/Oleg Pluton

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October 24: Mercury stands still

Saturn’s small moon Dione transits the disk this evening at 8:43 p.m. EDT, best seen from the eastern half of the U.S. However, the transit itself will be difficult to watch visually no matter your location, and will be best captured via high-speed video. Even if you aren’t an advanced photographer, however, you can watch Dione enter and exit the disk, as well as track several of Saturn’s other moons throughout the night.

Around 9 P.M. EDT (8 P.M. CDT), Saturn is well above the horizon, in the east for Midwestern observers and the southeast for those along the East Coast.…