../ dmsp_15_ephemeris_20191128.txt 22-Jun-2023 00:42 109300 dmsp_16_ephemeris_20191128.txt 22-Jun-2023 00:42 109444 dmsp_17_ephemeris_20191128.txt 22-Jun-2023 00:42 109350 dmsp_18_ephemeris_20191128.txt 22-Jun-2023 00:42 109371