../ dmsp_15_ephemeris_20190716.txt 22-Jun-2023 00:41 109561 dmsp_16_ephemeris_20190716.txt 22-Jun-2023 00:41 109596 dmsp_17_ephemeris_20190716.txt 22-Jun-2023 00:41 109605 dmsp_18_ephemeris_20190716.txt 22-Jun-2023 00:41 109572