../ dmsp_15_ephemeris_20120414.txt 22-Jun-2023 00:19 109829 dmsp_16_ephemeris_20120414.txt 22-Jun-2023 00:19 109762 dmsp_17_ephemeris_20120414.txt 22-Jun-2023 00:19 109668 dmsp_18_ephemeris_20120414.txt 22-Jun-2023 00:19 109684