../ dmsp_15_ephemeris_20220618.txt 22-Jun-2023 16:38 109620 dmsp_16_ephemeris_20220618.txt 22-Jun-2023 16:38 109542 dmsp_17_ephemeris_20220618.txt 22-Jun-2023 16:38 109601 dmsp_18_ephemeris_20220618.txt 22-Jun-2023 16:38 109465