../ dmsp_15_ephemeris_20110319.txt 22-Jun-2023 00:17 108268 dmsp_16_ephemeris_20110319.txt 22-Jun-2023 00:17 108057 dmsp_17_ephemeris_20110319.txt 22-Jun-2023 00:17 108215 dmsp_18_ephemeris_20110319.txt 22-Jun-2023 00:17 108214