../ dmsp_15_ephemeris_20201021.txt 22-Jun-2023 00:45 109597 dmsp_16_ephemeris_20201021.txt 22-Jun-2023 00:45 109501 dmsp_17_ephemeris_20201021.txt 22-Jun-2023 00:45 109512 dmsp_18_ephemeris_20201021.txt 22-Jun-2023 00:45 109512