../ dmsp_15_ephemeris_20111107.txt 22-Jun-2023 00:18 109446 dmsp_16_ephemeris_20111107.txt 22-Jun-2023 00:18 109499 dmsp_17_ephemeris_20111107.txt 22-Jun-2023 00:18 109439 dmsp_18_ephemeris_20111107.txt 22-Jun-2023 00:18 109477