../ dmsp_15_ephemeris_20121217.txt 22-Jun-2023 16:11 109422 dmsp_16_ephemeris_20121217.txt 22-Jun-2023 16:11 109306 dmsp_17_ephemeris_20121217.txt 22-Jun-2023 16:11 109445 dmsp_18_ephemeris_20121217.txt 22-Jun-2023 16:11 109421