Atlyn Calendar Slicer

Filter a report by a date column from a real 7-column month grid instead of a horizontal timeline ribbon. Pick a single day, drag a range, Ctrl-click individual days, or apply relative presets such as Month-to-Date, Year-to-Date, and Last 7 Days that stay correct over time. Free and open source under the MIT License.

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Features

✓A real 7-column month grid with greyed adjacent-month days — not a horizontal timeline ribbon

✓Previous/next month navigation, a Today jump, and a configurable week start (Sunday, Monday, or Saturday)

✓Single-day click, click-drag ranges, Shift-click ranges, and Ctrl/⌘-click for non-contiguous days

✓Relative presets (Today, This Week, Last 7/14/30 Days, MTD, QTD, YTD, Last Month/Quarter/Year) that stay correct over time instead of freezing when the bookmark was saved

✓Half-open date ranges so fact rows carrying a time component are never silently dropped

✓Optional ISO-8601 week-number column, weekend shading, and a visible Clear button

✓1–4 month multi-grid view with a configurable fiscal-year start month

✓Optional Values-measure heat-shading on a low→high ramp — opt-in and off by default, since binding a measure disables Power BI Sync Slicers

✓Full keyboard navigation with role="grid"/aria-selected, high contrast, and report-theme awareness

✓Localized field wells, format pane, and messages

See It in Action

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Screenshot coming soon

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Screenshot coming soon

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Screenshot coming soon

Ready to get started?

Atlyn Calendar Slicer is completely free — no subscription or license key required.

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