../ dmsp_15_ephemeris_20170602.txt 22-Jun-2023 16:25 109454 dmsp_16_ephemeris_20170602.txt 22-Jun-2023 16:25 109528 dmsp_17_ephemeris_20170602.txt 22-Jun-2023 16:25 109618 dmsp_18_ephemeris_20170602.txt 22-Jun-2023 16:25 109598