../ dmsp_15_ephemeris_20120314.txt 22-Jun-2023 00:19 108171 dmsp_16_ephemeris_20120314.txt 22-Jun-2023 00:19 108092 dmsp_17_ephemeris_20120314.txt 22-Jun-2023 00:19 108220 dmsp_18_ephemeris_20120314.txt 22-Jun-2023 00:19 108146