See the harvest moon shine in the night sky Monday, 2 days before the autumnal equinox
As the fall season approaches and colder temperatures set in, there’s a silver lining to look up to — literally — as the harvest moon makes its debut on Sept. 20, bringing plenty of bright moonlight.
The full moon known as the harvest moon, as it traditionally gave farmers more time to harvest their summer-grown crops into the night, will make its appearance Monday night soon after sunset.
Appearing two days before the autumnal equinox this year, the full moon can first be seen at 7:55 p.m. ET, 17 minutes after sunset, according to NASA.
During the few days surrounding the harvest moon’s appearance, the moonrise will occur within just 25 to 30 minutes across the northern United States and only 10 to 20 minutes in farther north Canada and Europe, according to NASA.
Typically, the moon rises around sunset and about 50 minutes later each day, according to EarthSky. But when a full moon occurs near an autumn equinox, like the harvest moon, the moon rises closer to the time of sunset, creating a dusk-till-dawn moonlight for several nights in a row.
This year’s harvest moon will be the last of the summer season for those living in the Northern Hemisphere, while for those in the Southern Hemisphere it will be the fourth winter full moon, according to EarthSky.
The harvest moon may seem bigger and brighter than other full moons, and that’s because this moon is physically closer to the horizon. The location of this moon gives the illusion of largeness, despite not being any bigger than other full moons.
Another quirk to the harvest moon is its color — it may look especially orange. That’s also due to the fact that the harvest moon is closer to the horizon, which creates a greater thickness of Earth’s atmosphere creating an orange hue, according to EarthSky.
It’s been a year of unusual celestial activity, with a rare third full moon, known as a Blue Moon, making an appearance in late August. Typically, it’s more common for a season to have three full moons, however this year there will be four that occur in just one season alone, between the June solstice and September equinox.
Upcoming sky schedule
Throughout the remainder of 2021, you might be able to catch these space and sky events depending on your location.
The full moons and their names, according to The Old Farmer’s Almanac:
• Sept. 20: harvest moon
• Oct. 20: hunter’s moon
• Nov. 19: beaver moon
• Dec. 18: cold moon
Meteor showers, according to EarthSky’s 2021 meteor shower guide:
• Oct. 8: Draconids
• Oct. 21: Orionids
• Nov. 4-5: South Taurids
• Nov. 11-12: North Taurids
• Nov. 17: Leonids
• Dec. 13-14: Geminids
• Dec. 22: Ursids
Solar and lunar eclipses, according to The Old Farmer’s Almanac:
• Nov. 19: A partial eclipse of the moon, which people in North America and Hawaii will see between 1 a.m. Eastern time and 7:06 a.m. Eastern time.
• Dec. 4: A total eclipse visible for those in the Falkland Islands, the southern tip of Africa, Antarctica and southeastern Australia.
When planets will be visible
Skywatchers will have multiple opportunities to spot the planets during certain mornings and evenings throughout the rest of 2021, according to the Farmer’s Almanac planetary guide.
Seeing most of these — except Neptune — with the naked eye is possible, but binoculars or a telescope will provide the best view.
Mercury will appear as a bright star in the morning sky from Oct. 18 to Nov. 1. It will shine in the night sky until Sept. 21, and Nov. 29 to Dec. 31.
Venus, our closest neighbor in the solar system, will appear in the western sky at dusk in the evenings through Dec. 31. It’s the second-brightest object in our sky, after the moon.
Mars makes its reddish appearance in the morning sky between Nov. 24 and Dec. 31.
Jupiter, the largest planet in our solar system, is the third-brightest object in our sky. Look for it in the evenings from now until Dec. 31.
Saturn’s rings are only visible through a telescope, but the planet itself can still be seen with the naked eye in the evenings until Dec. 31.
Binoculars or a telescope will help you spot the greenish glow of Uranus in the mornings through Nov. 3 and in the evenings from Nov. 4 to Dec. 31. It will be at its brightest now until Dec. 31.
And our most distant neighbor in the solar system, Neptune, will be visible through a telescope in the evenings now until Dec. 31. It will be at its brightest until Nov. 8.