../ dmsp_15_ephemeris_20180117.txt 22-Jun-2023 00:36 108142 dmsp_16_ephemeris_20180117.txt 22-Jun-2023 00:36 108001 dmsp_17_ephemeris_20180117.txt 22-Jun-2023 00:36 107821 dmsp_18_ephemeris_20180117.txt 22-Jun-2023 00:36 107830