../ dmsp_15_ephemeris_20211110.txt 22-Jun-2023 17:04 109551 dmsp_16_ephemeris_20211110.txt 22-Jun-2023 17:04 109514 dmsp_17_ephemeris_20211110.txt 22-Jun-2023 17:04 109382 dmsp_18_ephemeris_20211110.txt 22-Jun-2023 17:04 109542