September’s full Harvest Moon will rise into the eastern sky this weekend, bringing one of the most distinctive moonrises of the year. September’s full moon turns full on Saturday, Sept. 26, at 12:49 p.m. EDT, but the best time to see it will come around sunset that evening, when a huge-looking orange moon will appear close to the horizon. Saturn will shine beneath, just days before reaching its brightest of the year at opposition. But what makes a Harvest Moon special isn’t its color, size or brightness — it’s what happens on the nights around it. Here’s everything you need to know to see the full Harvest Moon this weekend.

September’s moon turns full at 12:49 p.m. EDT on Saturday, Sept. 26, according to Timeanddate.com .

The Harvest Moon is the name given to the full moon that occurs closest to the September equinox, which occurred on Tuesday, Sept. 22, in 2026.

Saturn will be visible close to the Harvest Moon, with much fainter Neptune also nearby, according to NASA .

Unlike most full moons, the Harvest Moon rises at roughly the same time for several successive evenings across the Northern Hemisphere, making a spectacle for the entire weekend. The cause is the unusually shallow angle at which the moon’s path crosses the eastern horizon around the autumn equinox.

WHY IS THE HARVEST MOON DIFFERENT?

The Harvest Moon is arguably the most famous full moon of the year, but not because it’s bigger, brighter or more orange than others. While many full moons seem to have names associated with them that make no sense to most people (particularly the Beaver Moon, Sturgeon Moon and Wolf Moon), the Harvest Moon’s name does have a deep meaning linked not to culture, but also to celestial mechanics.

The moon normally rises about 50 minutes later each successive day. Around the September equinox, however, the geometry of its orbit means that delay becomes much shorter at mid-northern latitudes. In New York, for example, the moon rises at 6:34 p.m. EDT on Saturday and 6:58 p.m. EDT on Sunday — a difference of just 24 minutes.

An unusually shallow angle at which the moon’s path crosses the eastern horizon around the autumn equinox produces a few successive evenings when a bright moon rises around sunset — a key factor in whether a moonrise is impactful. Meanwhile, the Harvest Moon’’s name comes from the prolonged evening illumination if causes — something that was useful during the autumn harvest before artificial lighting and agricultural machinery were invented.

WHEN TO SEE THE HARVEST MOON

Go somewhere with a clear view low to the east around sunset on Saturday, Sept. 26 (roughly 6:45 p.m. EDT on the East Coast and 6:40 p.m. PDT on the West Coast, but check sunset and moonrise times for your location).

As the moon appears through the denser part of Earth’s atmosphere close to the horizon, it will look yellow or orange as mainly long-wavelength reddish light travels through the thickest part of Earth’s atmosphere. It will also appear unusually large thanks to the “moon illusion,” though its physical size won’t have suddenly changed — only the context you look at it (as the moon appears next to trees and buildings, your brain will see it as larger than it is).

Saturday isn’t the only opportunity. The moon will again rise shortly after sunset on Sunday, Sept. 27, still appearing essentially full. That second moonrise is one of the Harvest Moon’s defining tricks.

There will also be another bright object close to the moon. Saturn will shine just below the Harvest Moon as it rises, creating an easy naked-eye pairing. Saturn is approaching opposition on Oct. 4, when Earth passes between it and the sun. That means the ringed planet is already particularly bright and visible for virtually the entire night.

The faint planet Neptune will complete a broad triangle with the moon and Saturn, though at around magnitude 8 it requires binoculars or a telescope.