../ dmsp_15_ephemeris_20111219.txt 22-Jun-2023 00:19 109491 dmsp_16_ephemeris_20111219.txt 22-Jun-2023 00:19 109285 dmsp_17_ephemeris_20111219.txt 22-Jun-2023 00:19 109388 dmsp_18_ephemeris_20111219.txt 22-Jun-2023 00:19 109234