../ dmsp_15_ephemeris_20120906.txt 22-Jun-2023 00:20 109606 dmsp_16_ephemeris_20120906.txt 22-Jun-2023 00:20 109759 dmsp_17_ephemeris_20120906.txt 22-Jun-2023 00:20 109817 dmsp_18_ephemeris_20120906.txt 22-Jun-2023 00:20 109719