Vibgyor Calendar is a free Chrome extension developed by randeep. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory. This extension aims to provide users with weekday information displayed in rainbow colors on web pages.

The main feature of Vibgyor Calendar is its utilization of the VIBGYOR or ROYGBIV pattern to map weekdays in a calendar. Each day of the week is assigned a specific color based on this pattern. For example, Monday is represented by the color violet, Tuesday by indigo, Wednesday by blue, Thursday by green, Friday by yellow, Saturday by orange, and Sunday by red. By color coding the dates, Vibgyor Calendar allows users to easily identify the day of the week without having to refer to a traditional calendar.

With Vibgyor Calendar, users no longer have to spend time deciphering dates or looking up the day of the week. This extension brings convenience and ease to daily scheduling and planning, making it a valuable tool for those who want a colorful and intuitive way to display weekday information.