../ dmsp_15_ephemeris_20120610.txt 22-Jun-2023 00:20 109528 dmsp_16_ephemeris_20120610.txt 22-Jun-2023 00:20 109544 dmsp_17_ephemeris_20120610.txt 22-Jun-2023 00:20 109632 dmsp_18_ephemeris_20120610.txt 22-Jun-2023 00:20 109690