../ dmsp_15_ephemeris_20191207.txt 22-Jun-2023 16:26 109395 dmsp_16_ephemeris_20191207.txt 22-Jun-2023 16:26 109384 dmsp_17_ephemeris_20191207.txt 22-Jun-2023 16:26 109215 dmsp_18_ephemeris_20191207.txt 22-Jun-2023 16:26 109280