../ dmsp_15_ephemeris_20190504.txt 22-Jun-2023 00:40 109647 dmsp_16_ephemeris_20190504.txt 22-Jun-2023 00:40 109685 dmsp_17_ephemeris_20190504.txt 22-Jun-2023 00:40 109738 dmsp_18_ephemeris_20190504.txt 22-Jun-2023 00:40 109605