../ dmsp_15_ephemeris_20120330.txt 22-Jun-2023 16:09 108141 dmsp_16_ephemeris_20120330.txt 22-Jun-2023 16:09 108209 dmsp_17_ephemeris_20120330.txt 22-Jun-2023 16:09 108178 dmsp_18_ephemeris_20120330.txt 22-Jun-2023 16:09 108221