Format your data column as a date but allow it to display time as seen below.

Be sure to include the time AND date when the data is entered (if we don’t, Excel assumes the date is 01/01/1900).

Format your Axis the same way but remember that

01/01/2015 01:00 PM is less than 01/01/2015 05:00 PM

and 01/01/2015 11:00 PM is less than 01/02/2015 05:00 AM

Your scatter chart will expand, significantly but it will still accurately represent the data.

]]>(Where A1 is the cell needing rounding)

In the example below, column A is the time needing to be rounded, and column B is the rounded result.

Be sure that all the times, involved, are formatted for “Big time” or time that exceeds 24 hours (see below)

]]>

Excel uses a specific format for time calculations that exceed 24 hours.

It’s called “Large Time” format.

That’s important because Excel defaults to viewing all time as a fraction of a date (unless otherwise instructed)

If all the cells (including the SUM) are formatted for “Large Time”, you can use notations that exceed 24 hours and still get a response in hours/minutes only.

]]>

Is there a practical way to plot Date AND Time? Thanks nice article ]]>

Just what I needed ]]>

THANKS! ]]>