Moon Phase Today: Observers Watch Waxing Gibbous Grow Toward Full Moon
On March 31 (ET) the moon phase today is Waxing Gibbous, with 97% of the lunar surface illuminated and the satellite approaching its fullest stage ahead of the April 1 (ET) full moon. In the coming nights that swelling disk will be the destination for both casual skywatchers and those with optics at hand.
Moon Phase Today: What to Look For
For anyone checking the moon phase today, the surface features visible change with the amount of illumination and the equipment used. With no visual aids, observers can pick out large dark plains and bright highlands: the Kepler Crater, the Mare Vaporum, and the Mare Serenitatis are all visible on this waxing gibbous face. Binoculars extend that list to include Mare Nectaris, Alphonsus Crater, and the Endymion Crater. A small telescope will reveal finer terrain such as the Descartes Highlands, the Caucasus Mountains and the Linne Crater; on earlier nights, observers could also trace the Apollo 12 landing region when conditions allowed.
Why the Cycle Matters
“The Moon is approaching its fullest stage, with the majority of its surface now lit by the Sun, ” said Lois Mackenzie, freelance reporter, summarizing the visual shift many will notice this week. NASA provides the baseline figures used by observers: the lunar orbit completes in about 29. 5 days and that motion produces eight recognizable phases. Those phases run from New Moon through Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third (or Last) Quarter and Waning Crescent. The sequence explains why the same face remains pointed at Earth while lighted portions grow and shrink.
How Observers and Astronomers Are Responding
Observers and professional planners treat the Moon’s regularity as an asset. NASA’s Daily Moon Guide supplies nightly illumination percentages used in outreach and scheduling; on March 31 (ET) it lists the waxing gibbous at 97% illumination and notes the next full moon is expected on April 1 (ET). Amateur astronomers and interested parties use that predictability to plan viewing sessions and target specific features on the lunar surface as illumination shifts each night.
Seasoned skywatchers note that hemisphere and equipment change what you see: the apparent orientation of bright and dark areas differs between northern and southern viewpoints, and binoculars versus a telescope dramatically broaden the catalog of visible features. Those coming with only the naked eye still have a clear show—the Moon is large, bright and close to full, making its major mares and some craters easy to pick out on clear nights.
Where nights are clear, the approach to the full Moon has a steady rhythm: the illuminated portion increases nightly until the full phase, offering repeated chances to observe slight changes in shadow and contrast across familiar landmarks. That pattern allows both casual observers and scientific programs to align plans with predictable illumination.
Back under the brightening sky on March 31 (ET), observers who began the week with a crescent or a first-quarter view will find the Moon now dominated by light. The steady climb to full on April 1 (ET) leaves the surface at nearly full illumination, a stage when broad features stand out and fine relief softens under direct sunlight. For many watching this week, the waxing gibbous is both an ending and a beginning—one more night to spot a favorite crater before the full Moon’s glow fills the sky.
