../ dmsp_15_ephemeris_20121013.txt 22-Jun-2023 16:33 109557 dmsp_16_ephemeris_20121013.txt 22-Jun-2023 16:33 109567 dmsp_17_ephemeris_20121013.txt 22-Jun-2023 16:33 109564 dmsp_18_ephemeris_20121013.txt 22-Jun-2023 16:33 109688