../ dmsp_15_ephemeris_20170617.txt 22-Jun-2023 00:34 109471 dmsp_16_ephemeris_20170617.txt 22-Jun-2023 00:34 109532 dmsp_17_ephemeris_20170617.txt 22-Jun-2023 00:34 109575 dmsp_18_ephemeris_20170617.txt 22-Jun-2023 00:34 109610