Notes:
- Monday -> 1
- Tuesday -> 2
- Wednesday -> 3
- Thursday -> 4
- Friday -> 5
- Saturday -> 6
- Sunday -> 0
test0
https://crashlaker.github.io/d3js-static/tt/calendar-view/index0.html
Calendar view
Calendar 2020 echarts
https://observablehq.com/@kyeongan/calendar-example
Simple calendar heatmap testing
https://observablehq.com/@erincaughey/simple-calendar-heatmap-testing
Calendar breakdown
https://observablehq.com/@stroked/calendar-breakdown
Calendar Heatmap
https://observablehq.com/@two-n/calendar-heatmap
Data Quality Calendar
https://observablehq.com/@shaunlebron/data-quality-calendar
D3 Calendar
https://observablehq.com/@jorge-longoria/d3-calendar