../ dmsp_15_ephemeris_20111222.txt 22-Jun-2023 00:19 109401 dmsp_16_ephemeris_20111222.txt 22-Jun-2023 00:19 109384 dmsp_17_ephemeris_20111222.txt 22-Jun-2023 00:19 109368 dmsp_18_ephemeris_20111222.txt 22-Jun-2023 00:19 109472