../ dmsp_15_ephemeris_20170629.txt 22-Jun-2023 00:34 109425 dmsp_16_ephemeris_20170629.txt 22-Jun-2023 00:34 109513 dmsp_17_ephemeris_20170629.txt 22-Jun-2023 00:34 109745 dmsp_18_ephemeris_20170629.txt 22-Jun-2023 00:34 109439