../ dmsp_15_ephemeris_20190910.txt 22-Jun-2023 00:41 109706 dmsp_16_ephemeris_20190910.txt 22-Jun-2023 00:41 109558 dmsp_17_ephemeris_20190910.txt 22-Jun-2023 00:41 109641 dmsp_18_ephemeris_20190910.txt 22-Jun-2023 00:41 109582