../ dmsp_15_ephemeris_20120914.txt 22-Jun-2023 00:20 109614 dmsp_16_ephemeris_20120914.txt 22-Jun-2023 00:20 109669 dmsp_17_ephemeris_20120914.txt 22-Jun-2023 00:20 109656 dmsp_18_ephemeris_20120914.txt 22-Jun-2023 00:20 109702