These original Kirt's Cogitations™ may be reproduced (no more than
5, please) provided proper credit is given to me, Kirt Blattenberger.
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Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or
reflection; meditation; contemplation.
Kirt [kert] – proper noun: RF Cafe webmaster.
The Twilight Zone - Defined
is classified as Astronomical when the sun is between 18° and 12° below
the horizon, Nautical when between 12° and 6° below the horizon and
Civil when between 6° and 0° below the horizon.