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Questions about Mathematica's date and time functions.
7
votes
1
answer
150
views
DateDifference inconsistency - feature or bug?
The following code attempts to measure the difference in months between the last day of a year and the first day of a month in the following year.
QuantityMagnitude@DateDifference[{2018, 12, 31}, {201 …
2
votes
1
answer
123
views
Bizarre behaviour - Span will speed up 1000-fold when passed input containing bad indices
(apologies for length but you can jump to a statement of the essential problem below)
UPDATE:
The data set is too large to paste. However, I have shown below how to generate pseudodata which reproduce …
26
votes
1
answer
916
views
Mathematica cannot seem to properly handle times in the 1 hour before clocks go back
Using Chicago as an example;
According to the current rules for applying daylight saving time, at 02:00:00 on the first Sunday of November, clocks in Chicago go back 1 hour (from Central Daylight Time …
2
votes
1
answer
77
views
How to get meaningful coordinates when a plot is embedded in GraphicsGrid/Column
This code produces a DateListPlot such that when I select Get Coordinates, hovering over a point with the mouse will generate a tooltip displaying the timestamp for that point as well as the associate …