../ dmsp_15_ephemeris_20170929.txt 22-Jun-2023 00:35 109593 dmsp_16_ephemeris_20170929.txt 22-Jun-2023 00:35 109673 dmsp_17_ephemeris_20170929.txt 22-Jun-2023 00:35 109528 dmsp_18_ephemeris_20170929.txt 22-Jun-2023 00:35 109632