../ dmsp_15_ephemeris_20170427.txt 22-Jun-2023 16:48 109518 dmsp_16_ephemeris_20170427.txt 22-Jun-2023 16:48 109491 dmsp_17_ephemeris_20170427.txt 22-Jun-2023 16:48 109643 dmsp_18_ephemeris_20170427.txt 22-Jun-2023 16:48 109720