../ dmsp_15_ephemeris_20190923.txt 22-Jun-2023 16:57 109720 dmsp_16_ephemeris_20190923.txt 22-Jun-2023 16:57 109622 dmsp_17_ephemeris_20190923.txt 22-Jun-2023 16:57 109505 dmsp_18_ephemeris_20190923.txt 22-Jun-2023 16:57 109531