Tuesday, September 17, 2024

Partially Eclipsed Harvest SuperMoon

The northerly portion of this full moon will also dip into Earth's umbra for 63.7 minutes, generating a shallow partial lunar eclipse visible across the Americas (except Alaska), the Atlantic Ocean, and western Europe and Africa. The moon will begin to enter Earth's penumbra, slightly darkening it, at
8:41 p.m. EDT (or 00:41 UT on September 18). A small "bite" out of the moon will be visible between 10:13p.m. and 11:16 p.m. EDT (02:13 and 03:16 UT),
with a maximum of 8.5% of the moon within Earth's shadow at 10:45 p.m. EDT
(or 02:45 UT). The moon will fully emerge from Earth's penumbra at 12:48 a.m. EDT (or 04:48 UT). Lunar eclipses are completely safe to look at without protective filters.

Full Harvest Supermoon

The moon will officially reach its full phase on Tuesday, September 17 at
10:34 p.m. EDT or 7:34 p.m. PDT, which converts to 02:34 UT on Wednesday.
With perigee arriving only 10 hours later, this full moon will also be the second of four supermoons in 2024. It will appear about 6% larger and 16% brighter than an average full moon, cross the sky from sunset to sunrise, and will produce large tides around the world. The September full moon, traditionally known as the "Corn Moon" and "Barley Moon", always shines in
or near the stars of Aquarius and Pisces. The indigenous Anishinaabe people
of the Great Lakes region call this moon Waatebagaa-giizis or Waabaagbagaa-giizis, the Leaves Turning or Leaves Falling Moon. Because this
is the closest full moon to the autumnal equinox in 2024, it is also the Harvest Moon. On the evenings around its full phase, the moon normally rises about 50 minutes later than the previous night. But the shallow slope of the evening ecliptic (and the moon's orbit) around the equinox causes Harvest
Moons to rise at almost the same time each night - only delayed by as little
as 10 minutes, depending on your latitude. This phenomenon traditionally allowed farmers to work into the evening under bright moonlight - hence the name.

(Data Courtesy of Starry Night)
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