../ dmsp_15_ephemeris_20190730.txt 22-Jun-2023 00:41 109480 dmsp_16_ephemeris_20190730.txt 22-Jun-2023 00:41 109432 dmsp_17_ephemeris_20190730.txt 22-Jun-2023 00:41 109698 dmsp_18_ephemeris_20190730.txt 22-Jun-2023 00:41 109530