../ dmsp_15_ephemeris_20201012.txt 22-Jun-2023 17:00 109540 dmsp_16_ephemeris_20201012.txt 22-Jun-2023 17:00 109626 dmsp_17_ephemeris_20201012.txt 22-Jun-2023 17:00 109560 dmsp_18_ephemeris_20201012.txt 22-Jun-2023 17:00 109528