../ dmsp_15_ephemeris_20180804.txt 22-Jun-2023 00:38 109591 dmsp_16_ephemeris_20180804.txt 22-Jun-2023 00:38 109680 dmsp_17_ephemeris_20180804.txt 22-Jun-2023 00:38 109650 dmsp_18_ephemeris_20180804.txt 22-Jun-2023 00:38 109480