../ dmsp_15_ephemeris_20180111.txt 22-Jun-2023 00:36 107874 dmsp_16_ephemeris_20180111.txt 22-Jun-2023 00:36 108003 dmsp_17_ephemeris_20180111.txt 22-Jun-2023 00:36 107902 dmsp_18_ephemeris_20180111.txt 22-Jun-2023 00:36 107852