../ dmsp_15_ephemeris_20120516.txt 22-Jun-2023 00:19 109474 dmsp_16_ephemeris_20120516.txt 22-Jun-2023 00:19 109678 dmsp_17_ephemeris_20120516.txt 22-Jun-2023 00:19 109623 dmsp_18_ephemeris_20120516.txt 22-Jun-2023 00:19 109670