../ dmsp_15_ephemeris_20230309.txt 22-Jun-2023 16:41 108236 dmsp_16_ephemeris_20230309.txt 22-Jun-2023 16:41 108150 dmsp_17_ephemeris_20230309.txt 22-Jun-2023 16:41 108160 dmsp_18_ephemeris_20230309.txt 22-Jun-2023 16:41 108121