../ dmsp_15_ephemeris_20131121.txt 22-Jun-2023 00:23 109476 dmsp_16_ephemeris_20131121.txt 22-Jun-2023 00:23 109412 dmsp_17_ephemeris_20131121.txt 22-Jun-2023 00:23 109377 dmsp_18_ephemeris_20131121.txt 22-Jun-2023 00:23 109313