../ dmsp_15_ephemeris_20161208.txt 22-Jun-2023 00:33 109438 dmsp_16_ephemeris_20161208.txt 22-Jun-2023 00:33 109381 dmsp_17_ephemeris_20161208.txt 22-Jun-2023 00:33 109295 dmsp_18_ephemeris_20161208.txt 22-Jun-2023 00:33 109187