../ dmsp_15_ephemeris_20210216.txt 22-Jun-2023 16:35 108052 dmsp_16_ephemeris_20210216.txt 22-Jun-2023 16:35 108110 dmsp_17_ephemeris_20210216.txt 22-Jun-2023 16:35 108101 dmsp_18_ephemeris_20210216.txt 22-Jun-2023 16:35 108090