../ dmsp_15_ephemeris_20171103.txt 22-Jun-2023 00:35 109481 dmsp_16_ephemeris_20171103.txt 22-Jun-2023 00:35 109518 dmsp_17_ephemeris_20171103.txt 22-Jun-2023 00:35 109449 dmsp_18_ephemeris_20171103.txt 22-Jun-2023 00:35 109610