../ dmsp_15_ephemeris_20120818.txt 22-Jun-2023 16:13 109719 dmsp_16_ephemeris_20120818.txt 22-Jun-2023 16:13 109600 dmsp_17_ephemeris_20120818.txt 22-Jun-2023 16:13 109733 dmsp_18_ephemeris_20120818.txt 22-Jun-2023 16:13 109755