Tagged Questions
16
votes
1answer
311 views
The Orbit and Perigee of the Flamsteed comet
Historical context
This year we have the 330-th anniversary of the Battle of Vienna - one of the great formative events of European history, it took place on September 12, 1683.
Kara Mustafa, Grand ...
9
votes
1answer
140 views
Why do DateList, DateString, and AstronomicalData ignore $TimeZone?
My reading of the documentation for DateList and DateString lead me to believe that both functions use ...
12
votes
2answers
300 views
How is AstronomicalData interpreting its date arguments?
It is easy to confirm that the AstronomicalData is not interpreting its arguments as UTC (or "GMT", which is, in any case, ambiguous) dates by verifying that the ...
12
votes
1answer
184 views
Is there a way to get AbsoluteTime to correctly report absolute time differences?
Absolute time supposedly reports the "total number of seconds" between two dates, but it does not. For example because of the leap second applied at 2012-06-30T23:59:60Z
...
9
votes
1answer
160 views
How do I determine astronomical transit times?
Mathematica, through the "legacy" Scientific Astronomer package, used to have the ability to easily determine accurate transit times of astronomical objects simply, with ...
6
votes
3answers
209 views
Determining the dates of days
I'm trying to use WeatherData[] to give me (not sure how) the temperature, humidity, wind-speed, cloud cover... at a certain location.
I only want the information ...
9
votes
1answer
148 views
How can I convert the dates returned by FinancialData into decimal representation?
I'm trying to run a regression using Fit on the output of FinancialData["SPY", "Jan. 1, 2011"]. However, the dates returned ...
