../ dmsp_15_ephemeris_20181002.txt 22-Jun-2023 16:29 109617 dmsp_16_ephemeris_20181002.txt 22-Jun-2023 16:29 109585 dmsp_17_ephemeris_20181002.txt 22-Jun-2023 16:29 109577 dmsp_18_ephemeris_20181002.txt 22-Jun-2023 16:29 109607