../ dmsp_15_ephemeris_20170820.txt 22-Jun-2023 16:26 109537 dmsp_16_ephemeris_20170820.txt 22-Jun-2023 16:26 109551 dmsp_17_ephemeris_20170820.txt 22-Jun-2023 16:26 109679 dmsp_18_ephemeris_20170820.txt 22-Jun-2023 16:26 109692