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Calendar Chart

Calendar charts map daily values onto a year grid, where each cell represents a day colored by its value. Explore GitHub-style contribution heatmaps and economic event calendars.
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  2. Calendar Chart

    Calendar Chart

GitHub Contributions CalendarGitHub-style contributions calendar chart with dark theme and ordinal level-based day coloring.
Mike Bostock's GitHub ContributionsA calendar graph visualizing GitHub contributions of Mike Bostock, a co-creator of D3.js & Observable, in 2017–2021. Loads data from JSON. Features custom colors, tooltip, and title. With years in reverse order.
U.S. Economic Events (2004-2018)Economic calendar heatmap for U.S. events with volatility-based coloring and HTML event table tooltips.