../ dmsp_15_ephemeris_20190415.txt 22-Jun-2023 00:40 109702 dmsp_16_ephemeris_20190415.txt 22-Jun-2023 00:40 109589 dmsp_17_ephemeris_20190415.txt 22-Jun-2023 00:40 109710 dmsp_18_ephemeris_20190415.txt 22-Jun-2023 00:40 109546