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If I wanted to work using dates and time going millions of years into the past/future how would I do it in C/C++/C#?
For example say I was working on an algorithm to see if a comet was going to hit the earth? Are there commercial or open source libraries that do this?
Most DateTime values only work for a few years. Unixes will run out in only 2038!.
Tony
Astronomers use their own calendar, different from the civil, Gregorian calendar.
Astronomical Julian Dates are what they use.
Look at http://en.wikipedia.org/wiki/Julian_day
Here’s a typical package: Solar Clock.