../ dmsp_15_ephemeris_20121022.txt 22-Jun-2023 00:20 109598 dmsp_16_ephemeris_20121022.txt 22-Jun-2023 00:20 109408 dmsp_17_ephemeris_20121022.txt 22-Jun-2023 00:20 109481 dmsp_18_ephemeris_20121022.txt 22-Jun-2023 00:20 109529