../ dmsp_15_ephemeris_20220120.txt 22-Jun-2023 00:49 107959 dmsp_16_ephemeris_20220120.txt 22-Jun-2023 00:49 107939 dmsp_17_ephemeris_20220120.txt 22-Jun-2023 00:49 107949 dmsp_18_ephemeris_20220120.txt 22-Jun-2023 00:49 107916