../ dmsp_15_ephemeris_20110512.txt 22-Jun-2023 00:17 109658 dmsp_16_ephemeris_20110512.txt 22-Jun-2023 00:17 109636 dmsp_17_ephemeris_20110512.txt 22-Jun-2023 00:17 109617 dmsp_18_ephemeris_20110512.txt 22-Jun-2023 00:17 109618