I need one calendar without default selected date, I want to highlight some dates which decided by my code.
may be some API like [nzDisabledDefaultDate]?

Please can anyone provide us with a solution ?
use [nzDateRender] customize the rendering of date cells
https://ng.ant.design/components/date-picker/en#components-date-picker-demo-date-render
demo: https://stackblitz.com/edit/angular-p5grec?file=src/app/app.component.ts
or customize basic theme
https://ng.ant.design/docs/customize-theme/en
Thanks for the response, and add one point : if want to customize the nz-calendar, you need to use [nzDateCell] , [nzDateRender] only support nz-date-picker.

Most helpful comment
use [nzDateRender] customize the rendering of date cells
https://ng.ant.design/components/date-picker/en#components-date-picker-demo-date-render
demo: https://stackblitz.com/edit/angular-p5grec?file=src/app/app.component.ts
or customize basic theme
https://ng.ant.design/docs/customize-theme/en