../ dmsp_15_ephemeris_20121014.txt 22-Jun-2023 16:33 109421 dmsp_16_ephemeris_20121014.txt 22-Jun-2023 16:33 109526 dmsp_17_ephemeris_20121014.txt 22-Jun-2023 16:33 109456 dmsp_18_ephemeris_20121014.txt 22-Jun-2023 16:33 109552