../ dmsp_15_ephemeris_20110807.txt 22-Jun-2023 16:11 109530 dmsp_16_ephemeris_20110807.txt 22-Jun-2023 16:11 109685 dmsp_17_ephemeris_20110807.txt 22-Jun-2023 16:11 109593 dmsp_18_ephemeris_20110807.txt 22-Jun-2023 16:11 109633