(Huffington Post) October’s full moon has a bonus in store for skywatchers this year.

A penumbral lunar eclipse — so called because only the incomplete outer portion of the Earth’s shadow, or penumbra, falls across the moon — is expected to reach its deepest point at 7:50 p.m. ET on Friday, Oct. 18.

Or, better yet, Get John Hagee’s “Four Blood Moons” now to understand the signs in the heavens, along with a biblical calendar designed specifically for tracking the feasts and the blood moons throughout 2014 and 2015.

Unlike total eclipses, in which Earth’s umbra — the central region of its shadow — darkens the moon entirely, a penumbral lunar eclipse involves only a slight dimming. Skywatchers should expect to see a much more subtle sight — with a shadow on the lower half of the full moon

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