../ dmsp_15_ephemeris_20190120.txt 22-Jun-2023 00:39 107913 dmsp_16_ephemeris_20190120.txt 22-Jun-2023 00:39 107985 dmsp_17_ephemeris_20190120.txt 22-Jun-2023 00:39 107812 dmsp_18_ephemeris_20190120.txt 22-Jun-2023 00:39 107948