../ dmsp_15_ephemeris_20110504.txt 22-Jun-2023 00:17 109598 dmsp_16_ephemeris_20110504.txt 22-Jun-2023 00:17 109668 dmsp_17_ephemeris_20110504.txt 22-Jun-2023 00:17 109588 dmsp_18_ephemeris_20110504.txt 22-Jun-2023 00:17 109617