../ dmsp_15_ephemeris_20190630.txt 22-Jun-2023 16:31 109492 dmsp_16_ephemeris_20190630.txt 22-Jun-2023 16:31 109517 dmsp_17_ephemeris_20190630.txt 22-Jun-2023 16:31 109659 dmsp_18_ephemeris_20190630.txt 22-Jun-2023 16:31 109618