../ dmsp_15_ephemeris_20130527.txt 22-Jun-2023 00:22 109443 dmsp_16_ephemeris_20130527.txt 22-Jun-2023 00:22 109509 dmsp_17_ephemeris_20130527.txt 22-Jun-2023 00:22 109647 dmsp_18_ephemeris_20130527.txt 22-Jun-2023 00:22 109667