../ dmsp_15_ephemeris_20201214.txt 22-Jun-2023 16:34 109341 dmsp_16_ephemeris_20201214.txt 22-Jun-2023 16:34 109368 dmsp_17_ephemeris_20201214.txt 22-Jun-2023 16:34 109382 dmsp_18_ephemeris_20201214.txt 22-Jun-2023 16:34 109380