In his calendars—six between 1617 and 1624—Kepler forecast planetary positions and weather as well as political events; the latter were often cannily accurate, thanks to his keen grasp of contemporary political and theological tensions.
根据他的历法，1617年-1624年间的6年中，开普勒预测了行星位置和天气以及政治事件；后者经常非常准确，得益于他敏锐的掌握了那个时期政治与神学的紧张关系。