../ dmsp_15_ephemeris_20201020.txt 22-Jun-2023 17:00 109561 dmsp_16_ephemeris_20201020.txt 22-Jun-2023 17:00 109574 dmsp_17_ephemeris_20201020.txt 22-Jun-2023 17:00 109495 dmsp_18_ephemeris_20201020.txt 22-Jun-2023 17:00 109540