../ dmsp_15_ephemeris_20201126.txt 22-Jun-2023 17:01 109408 dmsp_16_ephemeris_20201126.txt 22-Jun-2023 17:01 109363 dmsp_17_ephemeris_20201126.txt 22-Jun-2023 17:01 109309 dmsp_18_ephemeris_20201126.txt 22-Jun-2023 17:01 109333