../ dmsp_15_ephemeris_20131216.txt 22-Jun-2023 16:36 109401 dmsp_16_ephemeris_20131216.txt 22-Jun-2023 16:36 109297 dmsp_17_ephemeris_20131216.txt 22-Jun-2023 16:36 109296 dmsp_18_ephemeris_20131216.txt 22-Jun-2023 16:36 109180