../ dmsp_15_ephemeris_20201017.txt 22-Jun-2023 17:00 109630 dmsp_16_ephemeris_20201017.txt 22-Jun-2023 17:00 109665 dmsp_17_ephemeris_20201017.txt 22-Jun-2023 17:00 109552 dmsp_18_ephemeris_20201017.txt 22-Jun-2023 17:00 109474