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time sight |
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time sight [′tīm ‚sīt] (navigation) A common method for determining longitude by celestial observations; these observations are reduced by solving the navigational triangle for meridian angle and require known or assumed values for altitude, latitude, and declination; the meridian angle is converted to local hour angle and compared with Greenwich hour angle, and the latter is read from astronomical tables. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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