Much to the delight of lunaphiles everywhere, tonight heralds the viewing of September’s full moon–a harvest moon.
The harvest moon, as it is known, traditionally gave farmers more time to harvest their summer-grown crops into the night. It 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:
• September 20: harvest moon
• October 20: hunter’s moon
• November 19: beaver moon
• December 18: cold moon
Meteor showers, according to EarthSky’s 2021 meteor shower guide:
• October 8: Draconids
• October 21: Orionids
• November 4-5: South Taurids
• November 11-12: North Taurids
• November 17: Leonids
• December 13-14: Geminids
• December 22: Ursids
Solar and lunar eclipses, according to The Old Farmer’s Almanac:
• November 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.
• December 4: A total eclipse visible for those in the Falkland Islands, the southern tip of Africa, Antarctica and southeastern Australia.
–with files from CNN.com