Part of sundial and astronomical calendar at Stefanik's Observatory on Petrin Hill, Prague, Czech Republic.

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Size: 3456px × 5162px
Photo credit: © MARK WILLIAMSON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: astronomical, astronomy, calendar, clock, clocks, concrete, czech, dial, hill, hvezdarna, observatory, petrin, prague, republic, stefanik, stefaniks, sun, sundial, sundials, time