In ChartJs Hours And Minute(HH:MM) Format Doesnot Respond In New Version - chart.js

In ChartJs HH:MM Format of Hours and Minutes on Hover in New version doesnot respond but It will respond on Old Version.Any solution to use it in New Version
I Need Hours And Minute format(HH:MM) But They Provide Decimal Value(HH.MM)

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ChartJS Pannable time series data with last 24 hours if on the hour unit?

Here is the sandbox link: https://codesandbox.io/s/chartjs-plugin-zoom-touch-scroll-y-forked-6q5li4?file=/src/components/ChartLine.vue
I am trying to build a chart out of some time-series data that I have.
I have a picker to select the scale: hour, day, week, and month, and the data can span up to 4 months. I start on the hour scale, but a visual problem I have is that I initially want the chart to focus on the last n hours/days/weeks instead of the current behavior where the chart shows the entire x-axis so the hour unit doesn't really make sense without tooltips.
How can I set limits using a UNIX timestamp of the min and max, and have the chart initially focus on the last n units? Like the last 4 hours or 4 days or 4 weeks or 4 months?

How can I display a chart when two different time formats are in Google sheet table

The table in this spreadsheet has Start time (B3:B6), End time (D3:D6) and Total time (C3:C6). Total time is a length of hours, so its unit should not be AM/PM. But when I insert a chart with the Total time formatted without AM/PM displayed, the formatting of the X-Axis starts to include a date (12/29/1899...). Can this be corrected through chart settings or via a formula?
Toggling throught the formatting of C4:C6 changes the display back and forth on the Chart.
The shared spreadsheet is here.
Another related question to customizing the time value is here.

How to calculate number of hours when hours per day changed during the course of the project in Python 2.7 Django-admin

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At the moment the hover state shows different parts of the timestamp depending on the resolution of the graph.
Here are the docs for the visualization:
https://google-developers.appspot.com/chart/interactive/docs/gallery/timeline
I manage to think of workaround of this limitation.
What I did is to place the time string formatted exactly as I wanted to be as the bar label for the time period. Since the bar label is present on the first row of the tool-tip, this solves the issue very nicely.

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My Google searches so far have turned up nothing useful, due to using the word outlook.
Boost.Date_Time should give you the date manipulation functions you need. Should be easier to use their (debugged) code rather than trying to reinvent it.