../ dmsp_15_ephemeris_20111208.txt 22-Jun-2023 00:19 109308 dmsp_16_ephemeris_20111208.txt 22-Jun-2023 00:19 109442 dmsp_17_ephemeris_20111208.txt 22-Jun-2023 00:19 109260 dmsp_18_ephemeris_20111208.txt 22-Jun-2023 00:19 109439