ABSTRACT This article focuses on the chronological methods developed and deployed by two little known medieval scholars, Giles of Lessines (active in the 1260s) and Heinrich Selder (1370s), both of whom made noteworthy advances in the use of astronomy to establish dates and intervals between events in ancient history. Based on their reading of Ptolemy's Almagest, both authors emphasised the importance of dated astronomical observations, such as eclipses, arguing that the recorded intervals between these observations were endowed with a unique degree of reliability. Several key examples of how they mobilised Ptolemy's astronomical data to rectify parts of the timeline between the creation of the world and the present will be discussed. These show that the technical arguments contained in Giles’ and Selder's writings reached a level of sophistication and accuracy that has previously only been associated with chronologers of the early modern and later periods.

中文翻译：

---

“绝对确定”：两位已故中世纪技术先驱先驱

摘要本文着重介绍两位鲜为人知的中世纪学者，即勒斯的吉尔斯（活跃于1260年代）和海因里希·塞尔德（Heinrich Selder，1370年代）开发和运用的年代学方法，他们在利用天文学确定日期和间隔方面都取得了显着进展。在古代历史的事件之间。两位作者在阅读托勒密的《最大的》之后，都强调了过时的天文观测的重要性，例如日食，认为这些观测之间的记录间隔具有独特的可靠性。我们将讨论几个有关如何调动托勒密天文数据来纠正世界创建与当前之间的时间轴部分的关键示例。这些表明吉尔斯和塞尔德的技术论点