../ dmsp_15_ephemeris_20120617.txt 22-Jun-2023 00:20 109588 dmsp_16_ephemeris_20120617.txt 22-Jun-2023 00:20 109579 dmsp_17_ephemeris_20120617.txt 22-Jun-2023 00:20 109619 dmsp_18_ephemeris_20120617.txt 22-Jun-2023 00:20 109642