../ dmsp_15_ephemeris_20150731.txt 22-Jun-2023 00:28 109584 dmsp_16_ephemeris_20150731.txt 22-Jun-2023 00:28 109501 dmsp_17_ephemeris_20150731.txt 22-Jun-2023 00:28 109575 dmsp_18_ephemeris_20150731.txt 22-Jun-2023 00:28 109658 dmsp_19_ephemeris_20150731.txt 22-Jun-2023 00:28 109548