../ dmsp_15_ephemeris_20110727.txt 22-Jun-2023 00:18 109602 dmsp_16_ephemeris_20110727.txt 22-Jun-2023 00:18 109670 dmsp_17_ephemeris_20110727.txt 22-Jun-2023 00:18 109636 dmsp_18_ephemeris_20110727.txt 22-Jun-2023 00:18 109711