../ dmsp_15_ephemeris_20201214.txt 22-Jun-2023 00:45 109341 dmsp_16_ephemeris_20201214.txt 22-Jun-2023 00:45 109368 dmsp_17_ephemeris_20201214.txt 22-Jun-2023 00:45 109382 dmsp_18_ephemeris_20201214.txt 22-Jun-2023 00:45 109380