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Sites related to or proposing non-standard systems of calculating time, not based on hours, minutes and seconds.
Sites related to Clocks and Watches in general, especially with a scientific or mechanical interest.
All sites related to Clocks and Watches.
Sites whose primary purpose is to provide the current time in various time zones.
Sites related to Horology, the science and technology of timekeeping. This category includes the theory, the history, the technology, the art and every imaginable aspect of Horology.
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Last update: Wednesday, November 6, 2013 6:32:39 PM EST - edit