../ dmsp_15_ephemeris_20120603.txt 22-Jun-2023 00:20 109586 dmsp_16_ephemeris_20120603.txt 22-Jun-2023 00:20 109561 dmsp_17_ephemeris_20120603.txt 22-Jun-2023 00:20 109653 dmsp_18_ephemeris_20120603.txt 22-Jun-2023 00:20 109441