../ dmsp_15_ephemeris_20190208.txt 22-Jun-2023 00:39 107992 dmsp_16_ephemeris_20190208.txt 22-Jun-2023 00:39 108060 dmsp_17_ephemeris_20190208.txt 22-Jun-2023 00:39 107945 dmsp_18_ephemeris_20190208.txt 22-Jun-2023 00:39 107991