../ dmsp_15_ephemeris_20111225.txt 22-Jun-2023 00:19 109446 dmsp_16_ephemeris_20111225.txt 22-Jun-2023 00:19 109324 dmsp_17_ephemeris_20111225.txt 22-Jun-2023 00:19 109369 dmsp_18_ephemeris_20111225.txt 22-Jun-2023 00:19 109334