../ dmsp_15_ephemeris_20170517.txt 22-Jun-2023 16:25 109536 dmsp_16_ephemeris_20170517.txt 22-Jun-2023 16:25 109567 dmsp_17_ephemeris_20170517.txt 22-Jun-2023 16:25 109674 dmsp_18_ephemeris_20170517.txt 22-Jun-2023 16:25 109662