../ dmsp_15_ephemeris_20111130.txt 22-Jun-2023 00:18 109313 dmsp_16_ephemeris_20111130.txt 22-Jun-2023 00:18 109348 dmsp_17_ephemeris_20111130.txt 22-Jun-2023 00:18 109212 dmsp_18_ephemeris_20111130.txt 22-Jun-2023 00:18 109513