../ dmsp_15_ephemeris_20110326.txt 22-Jun-2023 00:17 108178 dmsp_16_ephemeris_20110326.txt 22-Jun-2023 00:17 108200 dmsp_17_ephemeris_20110326.txt 22-Jun-2023 00:17 108273 dmsp_18_ephemeris_20110326.txt 22-Jun-2023 00:17 108281