../ dmsp_15_ephemeris_20151218.txt 22-Jun-2023 16:22 109490 dmsp_16_ephemeris_20151218.txt 22-Jun-2023 16:22 109326 dmsp_17_ephemeris_20151218.txt 22-Jun-2023 16:22 109267 dmsp_18_ephemeris_20151218.txt 22-Jun-2023 16:22 109328 dmsp_19_ephemeris_20151218.txt 22-Jun-2023 16:22 109301