../ dmsp_15_ephemeris_20170309.txt 22-Jun-2023 00:33 108149 dmsp_16_ephemeris_20170309.txt 22-Jun-2023 00:33 108130 dmsp_17_ephemeris_20170309.txt 22-Jun-2023 00:33 108114 dmsp_18_ephemeris_20170309.txt 22-Jun-2023 00:33 108147