../ dmsp_15_ephemeris_20200730.txt 22-Jun-2023 00:44 109568 dmsp_16_ephemeris_20200730.txt 22-Jun-2023 00:44 109616 dmsp_17_ephemeris_20200730.txt 22-Jun-2023 00:44 109670 dmsp_18_ephemeris_20200730.txt 22-Jun-2023 00:44 109465