../ dmsp_15_ephemeris_20121030.txt 22-Jun-2023 00:20 109591 dmsp_16_ephemeris_20121030.txt 22-Jun-2023 00:20 109449 dmsp_17_ephemeris_20121030.txt 22-Jun-2023 00:20 109504 dmsp_18_ephemeris_20121030.txt 22-Jun-2023 00:20 109526