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📁 日历和计时日晷

Sundials are devices for telling time by measuring the position of the shadow of the sun. This category lists websites concerned with the theory of sundials.

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Jacksons Nurseries

http://www.jacksonsnurseries.co.uk/

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Greenfingers Trading Ltd.

http://www.greenfingers.com/

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Gardens and Pets Direct

http://www.cumbriagardensandpetsdirect.co.uk/

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Crocus.co.uk

http://www.crocus.co.uk/

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Scott's Liquid Gold

http://www.scottsliquidgold.com/

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Clean Team Catalog

http://www.thecleanteam.com/

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Flor Stor

http://www.florstor.com/

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Michiana Astronomical Society

http://www.michiana-astro.org/

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Indiana Astronomical Society

http://www.iasindy.org/

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Night Sky Observers

http://www.angelfire.com/ky/astronomers/

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Howard Astronomical League

http://www.howardastro.org/

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Minnesota Astronomical Society

http://www.mnastro.org/

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NexStar 50 Club

http://www.nexstarsite.com/nexstar50club.htm

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Hawaiian Astronomical Society

http://hawastsoc.org/

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Delmarva Stargazers On-Line

http://delmarvastargazers.org/

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Roper Mountain Astronomers

http://www.rmastro.com/

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Midlands Astronomy Club

http://www.midlandsastronomyclub.org/

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Las Vegas Astronomical Society

http://www.lvastronomy.com/

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Astronomical Society of Nevada

http://www.astronomynv.org/

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Astronomy Club of Tulsa

http://www.astrotulsa.com/

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