../ dmsp_15_ephemeris_20181202.txt 22-Jun-2023 00:39 109360 dmsp_16_ephemeris_20181202.txt 22-Jun-2023 00:39 109354 dmsp_17_ephemeris_20181202.txt 22-Jun-2023 00:39 109396 dmsp_18_ephemeris_20181202.txt 22-Jun-2023 00:39 109293