../ dmsp_15_ephemeris_20220417.txt 22-Jun-2023 00:50 109784 dmsp_16_ephemeris_20220417.txt 22-Jun-2023 00:50 109632 dmsp_17_ephemeris_20220417.txt 22-Jun-2023 00:50 109720 dmsp_18_ephemeris_20220417.txt 22-Jun-2023 00:50 109570