../ dmsp_15_ephemeris_20201015.txt 22-Jun-2023 16:34 109599 dmsp_16_ephemeris_20201015.txt 22-Jun-2023 16:34 109606 dmsp_17_ephemeris_20201015.txt 22-Jun-2023 16:34 109612 dmsp_18_ephemeris_20201015.txt 22-Jun-2023 16:34 109535