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Possible errors in historical dates: Error in correction from Julian to Gregorian calendars

机译:历史日期可能存在错误:从儒略历到公历的更正错误

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摘要

We have studied five major historical events reported between 1630 and 1680 AD, where detailed references to the stars in the night sky are available. We show that the descriptions of the star patterns at that time are off by exactly ten days. For example, the solar eclipse reported in one example to occur on 20 March 1680 in fact occurred on 30 March 1680 according to the current (Gregorian) calendar. This is checked using a computer simulation package (SkyMap Pro 8) and Oppelzer's Canon of Eclipses. We attribute this error in dating historical event(s) due to the switchover from Julian to Gregorian calendars in the latter half of the 18th century. Important events in Indian history are dated to an accuracy of a specific date that is calculated based on the documentation of a specific period(s) and historical references. However, it is often dificult to verify these dates by independent means since historical references do not often carry independent markers. However, documents on comparatively recent Indian history often give detailed description of astronomical events, which can be independently verified using modem software programs designed using data from high-precision astrometry satellites like Hipparcos and Tycho.
机译:我们研究了1630年至1680年之间报道的五项重大历史事件,其中提供了有关夜空星星的详细参考。我们显示当时对星型的描述恰好偏离了十天。例如,根据当前(格里高利历)日历,在一个例子中报告的日食发生在1680年3月20日,实际上发生在1680年3月30日。使用计算机模拟软件包(SkyMap Pro 8)和Oppelzer的Eclipse Canons进行检查。由于18世纪下半叶从朱利安历法转换为公历,我们将这种错误归因于历史事件的发生。印度历史上的重要事件的日期具有特定日期的准确性,该日期是根据特定时期的文件和历史参考资料计算得出的。但是,由于历史参考文献通常不带有独立的标记,因此通常很难通过独立的方式来验证这些日期。但是,有关印度近代历史的文献通常会详细说明天文学事件,可以使用调制解调器软件程序独立地对其进行验证,该调制解调器软件程序是使用来自诸如Hipparcos和Tycho等高精度天文卫星的数据设计的。

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