../ dmsp_15_ephemeris_20120319.txt 22-Jun-2023 00:19 108246 dmsp_16_ephemeris_20120319.txt 22-Jun-2023 00:19 108088 dmsp_17_ephemeris_20120319.txt 22-Jun-2023 00:19 108027 dmsp_18_ephemeris_20120319.txt 22-Jun-2023 00:19 108197