Full harvest moon to rise on Friday the 13th in rare lunar event

Click to play video: 'The Harvest Moon explained and myths debunked.'
The Harvest Moon explained and myths debunked.
WATCH: In this 2017 video, Queen's University astronomer Nathalie Ouellette explains why the full moon this time of year is called a "harvest moon." – Oct 5, 2017

The closest full moon to the autumnal equinox — typically known as a “harvest moon” — is slated to rise on or shortly after Friday the 13th, depending on the time zone, in a rare moment on the lunar calendar in the northern hemisphere.

The moon should appear full from Sept. 12 until Sept. 15, although NASA says it won’t be completely full until 9:30 pm. PST on Sept. 13 (or 12:30 EST on Sept. 14).

READ MORE: Lunar crash may have seeded indestructible ‘water bears’ on the moon

The name “harvest moon” is an old European term applied to a full moon that rises closest to the beginning of fall, NASA says. The bright light of the moon allows farmers to work a little bit later into the night to bring in their crops before fall sets in.

Story continues below advertisement
In this file photo, the Reid family harvest their wheat crop under a harvest moon near Cremona, Alta., Monday, Sept. 28, 2015. THE CANADIAN PRESS IMAGES/Jeff McIntosh

Skywatchers have a name for every full moon in a month, but the harvest moon is more than just a name. While most moons rise approximately 50 minutes after sunset, the harvest moon can appear as soon as 10 minutes after the sun sets.

In Toronto, for example, the sun is slated to set at 7:31 p.m., and the moon is expected to rise at 7:46 p.m. on Friday, according to the website Time and Date. The gap is even shorter in more northern latitudes.

The first day of fall will arrive on Sept. 22 or 23, depending on the time zone.

The next harvest moon on a Friday the 13th won’t come until August 2049.


Sponsored content