The PlanetWilson SharePoint Colour Calendar was a legendary, community-built JavaScript solution originally designed to bypass the strict color-coding and overlay limitations of Classic SharePoint (SharePoint 2010 and 2013).
While it was highly popular for optimizing team schedules over a decade ago, modern SharePoint Online now includes robust, built-in color-coding tools. You no longer need third-party scripts or custom code to create highly visual, optimized team calendars.
The legacy behavior of the PlanetWilson tool is detailed below, alongside instructions for implementing the same productivity benefits using native SharePoint tools today. What Was the PlanetWilson Colour Calendar?
In older, “Classic” versions of SharePoint, teams were restricted to a maximum of 10 calendar overlays, and changing event colors required complex workflows. A developer named Wilson (PlanetWilson) created a widely adopted workaround.
Video: Create your own SharePoint calendar – Microsoft Support
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