../ dmsp_15_ephemeris_20111125.txt 22-Jun-2023 00:18 109264 dmsp_16_ephemeris_20111125.txt 22-Jun-2023 00:18 109356 dmsp_17_ephemeris_20111125.txt 22-Jun-2023 00:18 109442 dmsp_18_ephemeris_20111125.txt 22-Jun-2023 00:18 109421