../ dmsp_15_ephemeris_20190429.txt 22-Jun-2023 00:40 109662 dmsp_16_ephemeris_20190429.txt 22-Jun-2023 00:40 109586 dmsp_17_ephemeris_20190429.txt 22-Jun-2023 00:40 109679 dmsp_18_ephemeris_20190429.txt 22-Jun-2023 00:40 109583