../ dmsp_15_ephemeris_20170604.txt 22-Jun-2023 16:25 109482 dmsp_16_ephemeris_20170604.txt 22-Jun-2023 16:25 109555 dmsp_17_ephemeris_20170604.txt 22-Jun-2023 16:25 109639 dmsp_18_ephemeris_20170604.txt 22-Jun-2023 16:25 109520