../ dmsp_15_ephemeris_20190516.txt 22-Jun-2023 00:40 109571 dmsp_16_ephemeris_20190516.txt 22-Jun-2023 00:40 109593 dmsp_17_ephemeris_20190516.txt 22-Jun-2023 00:40 109602 dmsp_18_ephemeris_20190516.txt 22-Jun-2023 00:40 109669