../ dmsp_15_ephemeris_20121023.txt 22-Jun-2023 00:20 109449 dmsp_16_ephemeris_20121023.txt 22-Jun-2023 00:20 109493 dmsp_17_ephemeris_20121023.txt 22-Jun-2023 00:20 109526 dmsp_18_ephemeris_20121023.txt 22-Jun-2023 00:20 109393