../ dmsp_15_ephemeris_20191014.txt 22-Jun-2023 16:31 109553 dmsp_16_ephemeris_20191014.txt 22-Jun-2023 16:31 109627 dmsp_17_ephemeris_20191014.txt 22-Jun-2023 16:31 109655 dmsp_18_ephemeris_20191014.txt 22-Jun-2023 16:31 109561