../ dmsp_15_ephemeris_20200320.txt 22-Jun-2023 16:59 108209 dmsp_16_ephemeris_20200320.txt 22-Jun-2023 16:59 108211 dmsp_17_ephemeris_20200320.txt 22-Jun-2023 16:59 108189 dmsp_18_ephemeris_20200320.txt 22-Jun-2023 16:59 108111