../ dmsp_15_ephemeris_20110417.txt 22-Jun-2023 00:17 109657 dmsp_16_ephemeris_20110417.txt 22-Jun-2023 00:17 109771 dmsp_17_ephemeris_20110417.txt 22-Jun-2023 00:17 109733 dmsp_18_ephemeris_20110417.txt 22-Jun-2023 00:17 109648