../ dmsp_15_ephemeris_20170429.txt 22-Jun-2023 16:25 109584 dmsp_16_ephemeris_20170429.txt 22-Jun-2023 16:25 109583 dmsp_17_ephemeris_20170429.txt 22-Jun-2023 16:25 109699 dmsp_18_ephemeris_20170429.txt 22-Jun-2023 16:25 109692