../ dmsp_15_ephemeris_20120530.txt 22-Jun-2023 00:20 109559 dmsp_16_ephemeris_20120530.txt 22-Jun-2023 00:20 109632 dmsp_17_ephemeris_20120530.txt 22-Jun-2023 00:20 109706 dmsp_18_ephemeris_20120530.txt 22-Jun-2023 00:20 109511