../ dmsp_15_ephemeris_20190908.txt 22-Jun-2023 16:57 109570 dmsp_16_ephemeris_20190908.txt 22-Jun-2023 16:57 109660 dmsp_17_ephemeris_20190908.txt 22-Jun-2023 16:57 109723 dmsp_18_ephemeris_20190908.txt 22-Jun-2023 16:57 109544