../ dmsp_15_ephemeris_20120707.txt 22-Jun-2023 00:20 109488 dmsp_16_ephemeris_20120707.txt 22-Jun-2023 00:20 109611 dmsp_17_ephemeris_20120707.txt 22-Jun-2023 00:20 109660 dmsp_18_ephemeris_20120707.txt 22-Jun-2023 00:20 109552