The Date panel allows you to select the beginning and end dates of the report. This can be done in two ways.

Filtering

For Filtering, you select beginning and/or end dates for the filter. Date filtering clauses are added by the system to the report filter and all issues outside the selected date interval are excluded from the report.

In other words, Filter Dates will reduce the number of issues in the report.

The filtering dates are not mandatory so you can choose to leave them empty or provide only one of them.

The date filter can be based on Created Date, Resolution Date or Update Date of issues.

When at least one filter date is selected, the selected date(s) will be shown on the toolbar, as shown in the screenshot.

Trim History

History Trimming is a more advanced form of date filtering.

Once again you select the beginning and/or end dates (after/before dates) for the trim. Trim History causes the history of each issue in the report to be trimmed down to include only the activities between given dates. It will be as if the issue was created at the trim beginning date (with the data the issue contained at that moment) and ceased to exist at the trim end date.

In other words, Trim Dates will not reduce the number of issues in the report but will limit which activities in each issue's history is processed for the report.

This feature is particularly useful when your issues have long lifespans but for a particular Time in Status report, you are interested in what happened to those issues between two specific dates.

The trimming dates are not mandatory so you can choose to leave them empty or provide only one of them.

When at least one trim date is selected, a scissors icon will appear in the date selection button of the toolbar to indicate that the values in the report are calculated by trimmed histories.