We are in a special time where Earth and Saturn’s tilts create two wonderful illusions for lovers of the night sky. Not only have Saturn’s rings disappeared from view, but its largest moon has cast its shadow upon the planet a handful of times this year, something you only have two more chances to see; the phenomenon only happens every 15 years. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

The dates for your diary are September 4 and September 20. In both cases, the moon and its shadow will appear across the surface of the planet in the Northern Hemisphere.

When to see Titan's shadow transit Saturn

According to Sky & Telescope , the best date for viewing it is September 20. Saturn is going to be at opposition on September 21, so

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