../ dmsp_15_ephemeris_20200918.txt 22-Jun-2023 00:45 109672 dmsp_16_ephemeris_20200918.txt 22-Jun-2023 00:45 109623 dmsp_17_ephemeris_20200918.txt 22-Jun-2023 00:45 109700 dmsp_18_ephemeris_20200918.txt 22-Jun-2023 00:45 109533