../ dmsp_15_ephemeris_20110502.txt 22-Jun-2023 00:17 109465 dmsp_16_ephemeris_20110502.txt 22-Jun-2023 00:17 109675 dmsp_17_ephemeris_20110502.txt 22-Jun-2023 00:17 109706 dmsp_18_ephemeris_20110502.txt 22-Jun-2023 00:17 109541