9 September (999 or 1000) – Battle of Svolder: A Norwegian fleet, commanded by Olaf Tryggvason, is defeated by the combined fleet of the Danish king Sweyn Forkbeard and his Swedish counterpart Olaf the Swede, resulting in Tryggvason's death, and the splitting up of Norway between Sweden and Denmark.

These timelines begin at the start of the 4th millennium in 3001 CE, and continue until the furthest and most remote reaches of future time.

However, given the finite speed of light – and the distance of 7,000 light years to the Pillars of Creation – it would take until the year 3000 AD for this destruction to be visible from Earth. Click to enlarge

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The Holocene calendar, also known as the Holocene Era or Human Era (HE), is a year numbering system that adds exactly 10,000 years to the currently dominant (AD/BC or CE/BCE) numbering scheme, placing its first year near the beginning of the Holocene geological epoch and the Neolithic Revolution, when humans shifted from a hunter-gatherer ...

BC to AD calculator can quickly tell you the time difference between a BC and AD year. Read on to learn what BC and AD stand for and how to tell how many years ago was any BC date. You can also learn about the differences between BC, BCE, AD, and CE. If you want to find the time difference between dates of this era, go to date to date calculator.

最速下降法是快速移除体系内应力的好方法, 但是接近能量极小点时收敛比较慢, 而共轭梯度法在能量极小点附近收敛效率高一些. 所以一般做能量最小化时都是先利用最速下降法进行优化, 完成之后再对得到的构象利用共轭梯度法优化一次, 这样做能有效地保证后续模拟的进行. 平衡模拟 你需要设置适当的模拟参数, 并且保证这些参数的设置与力场的构造过程相一致. 举个简单的例子, GROMOS力场是用范德华势双截断来定义范德华参数的, 如果你用GROMOS力场的话也应该 …

《重返未来：1999》是一款20世纪复古神秘学策略RPG。 1999年的最后一天，一场“暴雨”向天空倾泻，世界似乎来到一个崭新的旧时代。 而你，将作为“司辰”，无数时代的见证者，带领神秘学家们逃离“暴雨”。

2019年12月18日 · 9999黄金和999黄金的区别在于纯度不同：足金999是含金量99.9%，9999是含金量99.99%的。 黄金的数字标识代表了它的纯度，999是千足金，黄金的纯度是千分之九百九十九;9999是万足金，代表黄金的纯度是万分之玖仟玖佰九十，差了万分之九。

New : Reversed calendar, display any date, and see the day of the week through all the years 1851 - 2100. Here you can see a big number of yearly calendars for the current Gregorian calendar system. The year range is between 1 AD and 9999 AD, definitely hundreds of times more than you'll ever need...