../ dmsp_15_ephemeris_20190630.txt 22-Jun-2023 00:41 109492 dmsp_16_ephemeris_20190630.txt 22-Jun-2023 00:41 109517 dmsp_17_ephemeris_20190630.txt 22-Jun-2023 00:41 109659 dmsp_18_ephemeris_20190630.txt 22-Jun-2023 00:41 109618