../ dmsp_15_ephemeris_20111117.txt 22-Jun-2023 00:18 109483 dmsp_16_ephemeris_20111117.txt 22-Jun-2023 00:18 109410 dmsp_17_ephemeris_20111117.txt 22-Jun-2023 00:18 109352 dmsp_18_ephemeris_20111117.txt 22-Jun-2023 00:18 109412