../ dmsp_15_ephemeris_20190523.txt 22-Jun-2023 16:56 109554 dmsp_16_ephemeris_20190523.txt 22-Jun-2023 16:56 109583 dmsp_17_ephemeris_20190523.txt 22-Jun-2023 16:56 109716 dmsp_18_ephemeris_20190523.txt 22-Jun-2023 16:56 109590