../ dmsp_15_ephemeris_20170610.txt 22-Jun-2023 16:25 109398 dmsp_16_ephemeris_20170610.txt 22-Jun-2023 16:25 109610 dmsp_17_ephemeris_20170610.txt 22-Jun-2023 16:25 109603 dmsp_18_ephemeris_20170610.txt 22-Jun-2023 16:25 109676