
21. Waning Gibbous
The waning gibbous Moon phase starts as the Moon turns from being 99.9% illuminated to just 50.1%. The waning gibbous Moon tends to rise after Sunset and will not sit until after Sunrise. This phase begins as soon as the Full Moon phase has passed.
As with the waxing gibbous phase, it can be hard to differentiate between waning gibbous and full Moon because so much of the Moon surface is lit up. When the waning gibbous Moon is close to the horizon, it can appear glowing and red. If you venture out late at night, you may catch a glimpse of this beautiful Moon phase.