../ dmsp_15_ephemeris_20111006.txt 22-Jun-2023 00:18 109507 dmsp_16_ephemeris_20111006.txt 22-Jun-2023 00:18 109616 dmsp_17_ephemeris_20111006.txt 22-Jun-2023 00:18 109703 dmsp_18_ephemeris_20111006.txt 22-Jun-2023 00:18 109551