../ dmsp_15_ephemeris_20101216.txt 22-Jun-2023 00:16 109293 dmsp_16_ephemeris_20101216.txt 22-Jun-2023 00:16 109333 dmsp_17_ephemeris_20101216.txt 22-Jun-2023 00:16 109417 dmsp_18_ephemeris_20101216.txt 22-Jun-2023 00:16 109407