../ dmsp_15_ephemeris_20190706.txt 22-Jun-2023 00:41 109498 dmsp_16_ephemeris_20190706.txt 22-Jun-2023 00:41 109491 dmsp_17_ephemeris_20190706.txt 22-Jun-2023 00:41 109661 dmsp_18_ephemeris_20190706.txt 22-Jun-2023 00:41 109568