../ dmsp_15_ephemeris_20171228.txt 22-Jun-2023 16:27 109488 dmsp_16_ephemeris_20171228.txt 22-Jun-2023 16:27 109393 dmsp_17_ephemeris_20171228.txt 22-Jun-2023 16:27 109256 dmsp_18_ephemeris_20171228.txt 22-Jun-2023 16:27 109167