../ dmsp_15_ephemeris_20190610.txt 22-Jun-2023 16:31 109447 dmsp_16_ephemeris_20190610.txt 22-Jun-2023 16:31 109608 dmsp_17_ephemeris_20190610.txt 22-Jun-2023 16:31 109679 dmsp_18_ephemeris_20190610.txt 22-Jun-2023 16:31 109550