../ dmsp_15_ephemeris_20101209.txt 22-Jun-2023 00:16 109235 dmsp_16_ephemeris_20101209.txt 22-Jun-2023 00:16 109264 dmsp_17_ephemeris_20101209.txt 22-Jun-2023 00:16 109338 dmsp_18_ephemeris_20101209.txt 22-Jun-2023 00:16 109316