../ dmsp_15_ephemeris_20111118.txt 22-Jun-2023 00:18 109464 dmsp_16_ephemeris_20111118.txt 22-Jun-2023 00:18 109357 dmsp_17_ephemeris_20111118.txt 22-Jun-2023 00:18 109314 dmsp_18_ephemeris_20111118.txt 22-Jun-2023 00:18 109482