../ dmsp_15_ephemeris_20171025.txt 22-Jun-2023 16:50 109618 dmsp_16_ephemeris_20171025.txt 22-Jun-2023 16:50 109553 dmsp_17_ephemeris_20171025.txt 22-Jun-2023 16:50 109536 dmsp_18_ephemeris_20171025.txt 22-Jun-2023 16:50 109477