../ dmsp_15_ephemeris_20200924.txt 22-Jun-2023 16:34 109606 dmsp_16_ephemeris_20200924.txt 22-Jun-2023 16:34 109573 dmsp_17_ephemeris_20200924.txt 22-Jun-2023 16:34 109623 dmsp_18_ephemeris_20200924.txt 22-Jun-2023 16:34 109653