../ dmsp_15_ephemeris_20180309.txt 22-Jun-2023 00:36 108057 dmsp_16_ephemeris_20180309.txt 22-Jun-2023 00:36 108137 dmsp_17_ephemeris_20180309.txt 22-Jun-2023 00:36 108246 dmsp_18_ephemeris_20180309.txt 22-Jun-2023 00:36 108140