../ dmsp_15_ephemeris_20120815.txt 22-Jun-2023 00:20 109602 dmsp_16_ephemeris_20120815.txt 22-Jun-2023 00:20 109704 dmsp_17_ephemeris_20120815.txt 22-Jun-2023 00:20 109704 dmsp_18_ephemeris_20120815.txt 22-Jun-2023 00:20 109612