../ dmsp_15_ephemeris_20171009.txt 22-Jun-2023 00:35 109623 dmsp_16_ephemeris_20171009.txt 22-Jun-2023 00:35 109665 dmsp_17_ephemeris_20171009.txt 22-Jun-2023 00:35 109552 dmsp_18_ephemeris_20171009.txt 22-Jun-2023 00:35 109625