../ dmsp_15_ephemeris_20181101.txt 22-Jun-2023 00:38 109595 dmsp_16_ephemeris_20181101.txt 22-Jun-2023 00:38 109398 dmsp_17_ephemeris_20181101.txt 22-Jun-2023 00:38 109363 dmsp_18_ephemeris_20181101.txt 22-Jun-2023 00:38 109477