历史学家发现这台计算机在测算天文日历、日食、月食的运动状态方面的精确程度令人难以置信。
The findings led historians to realise the computer was actually an incredibly accurate celestial calendar, capable of predicting solar and lunar eclipses.
早起天文学的用处之一就是创造日历。
年历；历书一种年度出版物，包括含天气预告、天文信息、潮汐图表和其它相关表格信息的日历。
An annual publication including calendars with weather forecasts, astronomical information, tide tables, and other related tabular information.
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