../ dmsp_15_ephemeris_20200924.txt 22-Jun-2023 00:45 109606 dmsp_16_ephemeris_20200924.txt 22-Jun-2023 00:45 109573 dmsp_17_ephemeris_20200924.txt 22-Jun-2023 00:45 109623 dmsp_18_ephemeris_20200924.txt 22-Jun-2023 00:45 109653