../ dmsp_15_ephemeris_20210216.txt 22-Jun-2023 00:46 108052 dmsp_16_ephemeris_20210216.txt 22-Jun-2023 00:46 108110 dmsp_17_ephemeris_20210216.txt 22-Jun-2023 00:46 108101 dmsp_18_ephemeris_20210216.txt 22-Jun-2023 00:46 108090