../ dmsp_15_ephemeris_20211216.txt 22-Jun-2023 17:05 109328 dmsp_16_ephemeris_20211216.txt 22-Jun-2023 17:05 109337 dmsp_17_ephemeris_20211216.txt 22-Jun-2023 17:05 109305 dmsp_18_ephemeris_20211216.txt 22-Jun-2023 17:05 109316