../ dmsp_15_ephemeris_20170704.txt 22-Jun-2023 16:49 109468 dmsp_16_ephemeris_20170704.txt 22-Jun-2023 16:49 109535 dmsp_17_ephemeris_20170704.txt 22-Jun-2023 16:49 109578 dmsp_18_ephemeris_20170704.txt 22-Jun-2023 16:49 109576