../ dmsp_15_ephemeris_20210317.txt 22-Jun-2023 00:46 108205 dmsp_16_ephemeris_20210317.txt 22-Jun-2023 00:46 108317 dmsp_17_ephemeris_20210317.txt 22-Jun-2023 00:46 108196 dmsp_18_ephemeris_20210317.txt 22-Jun-2023 00:46 108145