../ dmsp_15_ephemeris_20180108.txt 22-Jun-2023 00:36 106637 dmsp_16_ephemeris_20180108.txt 22-Jun-2023 00:36 106558 dmsp_17_ephemeris_20180108.txt 22-Jun-2023 00:36 106395 dmsp_18_ephemeris_20180108.txt 22-Jun-2023 00:36 106518