../ dmsp_15_ephemeris_20111106.txt 22-Jun-2023 00:18 109355 dmsp_16_ephemeris_20111106.txt 22-Jun-2023 00:18 109589 dmsp_17_ephemeris_20111106.txt 22-Jun-2023 00:18 109405 dmsp_18_ephemeris_20111106.txt 22-Jun-2023 00:18 109538