Moon Phase on July 20, 2026 – Waxing Crescent Highlights International Moon Day

Tonight, July 20, 2026, the Moon is hanging in the sky as a delicate waxing crescent. NASA’s Daily Moon Guide puts the illumination at roughly 38 %, so you’ll see just a sliver of light on the right side (for observers in the Northern Hemisphere). It’s the perfect excuse to step outside, take a breath, and remember why we set July 20 aside each year.

International Moon Day isn’t just a catchy name; it marks the anniversary of the Apollo 11 landing in 1969. While we can’t all sprint to the Sea of Tranquility, a modest telescope or even a pair of good binoculars can bring a few historic sites into view. Look for the crisp edges of Mare Crisium and Mare Fecunditatis, or try to make out the shallow pits of Endymion and Posidonius craters.

If you have a telescope handy, you can push a little farther. The Apollo 11 and Apollo 17 landing spots sit near the bright rim of Mare Tranquillitatis, a nice nod to the day’s theme. Spotting the tiny basaltic plains of Mare Nectaris is also doable if the sky stays clear.

Wondering when the next full Moon will brighten the night? Mark your calendar for July 29, when the lunar disc will be completely illuminated. That will be a good night for night‑photography, or simply admiring the Moon’s glow without the faint crescent’s shadowy edges.

For those who like the science behind the show, remember the Moon completes a full cycle roughly every 29.5 days, marching through eight phases. Even though the same lunar face points toward Earth, the angle of sunlight changes, giving us everything from a skinny new Moon to a glowing full Moon and back again.

So whether you’re an avid stargazer, a casual backyard observer, or just someone who enjoys a bit of celestial trivia on a quiet evening, tonight’s waxing crescent offers a modest yet beautiful glimpse of our nearest neighbor. Grab your binoculars, look up, and enjoy the view.