../ dmsp_15_ephemeris_20130912.txt 22-Jun-2023 16:35 109680 dmsp_16_ephemeris_20130912.txt 22-Jun-2023 16:35 109703 dmsp_17_ephemeris_20130912.txt 22-Jun-2023 16:35 109593 dmsp_18_ephemeris_20130912.txt 22-Jun-2023 16:35 109626