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GPS ALMANACS, NANUS, AND OPS ADVISORIES (INLUDING ARCHIVES) Almanac information is available for download from this page. You may very well need to change the health settings when you use Yuma or SEM almanac data. While the orbital description data is generally usable for months, the satellite health may change at any time. For information on satellite health at times other than the almanac "Time Of Applicability", see the NANUs or status messages. An almanac entry of 000 indicates the satellite is healthy.
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U.S. Coast Guard Navigation Center - NAVCEN MS 7310, 7323 Telegraph Road, Alexandria, VA 20598 - 7310 | (703) 313-5900
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