../ dmsp_15_ephemeris_20170604.txt 22-Jun-2023 16:49 109482 dmsp_16_ephemeris_20170604.txt 22-Jun-2023 16:49 109555 dmsp_17_ephemeris_20170604.txt 22-Jun-2023 16:49 109639 dmsp_18_ephemeris_20170604.txt 22-Jun-2023 16:49 109520