../ dmsp_15_ephemeris_20190716.txt 22-Jun-2023 16:56 109561 dmsp_16_ephemeris_20190716.txt 22-Jun-2023 16:56 109596 dmsp_17_ephemeris_20190716.txt 22-Jun-2023 16:56 109605 dmsp_18_ephemeris_20190716.txt 22-Jun-2023 16:56 109572