The 2024 harvest moon is the 2nd supermoon and last lunar eclipse this year. Here’s the best time to see it when it rises Tuesday.

That’s because the moon looks larger and adopts a yellow-orangish hue when it’s close to the horizon. No one knows why this illusion occurs, according to NASA, but it makes for some spectacular moon gazing and photos.

The moon will rise over the east horizon around 7 p.m. local time on Tuesday for most of the contiguous US, but check TimeandDate for exactly when moonrise is in your area. Here’s when the full harvest moon will rise Tuesday in the five largest US cities:

Also happening Tuesday evening is a partial lunar eclipse. The eclipse will start at 8:41 p.m. ET, according to NASA, but you likely won’t see anything happen until closer to the eclipse’s peak at 10:44 p.m. ET, when the maximum area of the moon’s surface will be in shadow.

A partial lunar eclipse is when Earth passes between the sun and moon, casting its shadow across a certain percentage of the lunar surface. The more the Earth, sun, and moon are aligned, the greater portion of the moon the Earth eclipses.

This year’s harvest moon is the second in a series of four consecutive supermoons, according to EarthSky.

Supermoons occur when a full (or new) moon coincides with perigee — the point in the moon’s orbit when it’s closest to Earth.

But that distance isn’t always the same value because the moon’s orbit is elliptical, not perfectly circular. Therefore, supermoons vary in how much larger and brighter they may look.

In general, though, supermoons appear about 7% larger and 15% brighter than a typical full moon, Larry Wasserman, an astronomer at Lowell Observatory in Arizona, told Business Insider via email.

This year’s harvest moon will be about 222,131 miles from Earth at perigee. To compare, the closest supermoon so far this century, in November 2016, was at a distance of 221,524 miles, according to EarthSky.

The next two full moons, on October 17 and November 15, will also be supermoons. In particular, October’s full moon — called the Hunter’s moon — will be the largest supermoon of the year.