Equinox and Solstice Calculation - 项目摘要 |
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项目描述: |
The included public domain time routine converts Julian Day Numbers to Gregorian and Julian calendar dates. Julian Day Numbers (JDN) are used by astronomers as a date/time measure independent of calendars and convenient for computing the elapsed time between dates. The JDN for any date/time is the number of days (including fractional days) elapsed since noon, 1 Jan 4713 BC. Julian Day Numbers were originated by Joseph Scaliger in 1582 and named after his father Julius, not after Julius Caesar.
所包括的公共域时间例程可以将 Julian Day Numbers 转换为 Gregorian 和 Julian日期。 Julian Day Numbers (JDN)日期由天文学家使用,作为一个测量日期和时间的方法,独立于日历,可以方便地计算两个日期之间经过的时间。JDN日期/时间是从1 Jan 4713 BC正午以来经过的天数。 Julian Day Numbers 最初由 Joseph Scaliger 于1582年开始使用,根据他的父亲命名,不是根据Julius Caesar。
来源: http://www.codeguru.com/date_time/Seasons.html |
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发布者:
cbd002
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最新发布源码包 |
软件包 |
版本号 |
日期 |
本地下载 |
Seasons |
 1.0  |
2004-04-15 |
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