../ dmsp_15_ephemeris_20200416.txt 22-Jun-2023 16:59 109519 dmsp_16_ephemeris_20200416.txt 22-Jun-2023 16:59 109585 dmsp_17_ephemeris_20200416.txt 22-Jun-2023 16:59 109757 dmsp_18_ephemeris_20200416.txt 22-Jun-2023 16:59 109648