Tooltips are not always shown in DateListPlot

Questions
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1

Tooltips are very useful when analyzing time series, but DateListPlot does not show the Tooltips always. I tried PlotHighlighting and other options. When are the Tooltips shown and when are they not shown?

Attached notebook shows actual data with Tooltips and without Tooltips.

DateListPlotTooltips.jpg
DateListPlotTooltips.jpg976×623 74.4 KB

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2

Hmm, it seems that tooltips are displayed only for up to 10000 points, not one more:

DateListPlot[dbo[[1 ;; 10000]]]
DateListPlot[dbo[[1 ;; 10001]]]
3

I see! Thank you Gianluca.

4

A workaround is to split the plot into smaller pieces:

Show[DateListPlot[dbo[[1 ;; 8000]]],
 DateListPlot[dbo[[8001 ;;]]],
 PlotRange -> All]
5

Thank you Gianluca. Good idea. It works very well.