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Calendar

PreviousNext

A date field component that allows users to enter and edit date.

October 2025
"use client"

import * as React from "react"

import { Calendar } from "@/components/ui/calendar"

export function CalendarDemo() {
  const [date, setDate] = React.useState<Date | undefined>(new Date())

  return (
    <Calendar
      mode="single"
      selected={date}
      onSelect={setDate}
      className="rounded-md border shadow-sm"
      captionLayout="dropdown"
    />
  )
}

Blocks

We have built a collection of 30+ calendar blocks that you can use to build your own calendar components.

See all calendar blocks in the Blocks Library page.

Installation

pnpm dlx shadcn@latest add calendar

Usage

import { Calendar } from "@/components/ui/calendar"
const [date, setDate] = React.useState<Date | undefined>(new Date())
 
return (
  <Calendar
    mode="single"
    selected={date}
    onSelect={setDate}
    className="rounded-lg border"
  />
)

See the React DayPicker documentation for more information.

About

The Calendar component is built on top of React DayPicker.

Customization

See the React DayPicker documentation for more information on how to customize the Calendar component.

Date Picker

You can use the <Calendar> component to build a date picker. See the Date Picker page for more information.

Persian / Hijri / Jalali Calendar

To use the Persian calendar, edit components/ui/calendar.tsx and replace react-day-picker with react-day-picker/persian.

- import { DayPicker } from "react-day-picker"
+ import { DayPicker } from "react-day-picker/persian"
خرداد ۱۴۰۴
"use client"

import * as React from "react"
import {
  ChevronDownIcon,
  ChevronLeftIcon,
  ChevronRightIcon,
} from "lucide-react"
import { DayButton, getDefaultClassNames } from "react-day-picker"
import { DayPicker } from "react-day-picker/persian"

import { cn } from "@/lib/utils"
import { Button, buttonVariants } from "@/components/ui/button"

export function CalendarHijri() {
  const [date, setDate] = React.useState<Date | undefined>(
    new Date(2025, 5, 12)
  )

  return (
    <Calendar
      mode="single"
      defaultMonth={date}
      selected={date}
      onSelect={setDate}
      className="rounded-lg border shadow-sm"
    />
  )
}

// ----------------------------------------------------------------------------
// The code below is for this example only.
// For your own calendar, you would edit the calendar.tsx component directly.
// ----------------------------------------------------------------------------
function Calendar({
  className,
  classNames,
  showOutsideDays = true,
  captionLayout = "label",
  buttonVariant = "ghost",
  formatters,
  components,
  ...props
}: React.ComponentProps<typeof DayPicker> & {
  buttonVariant?: React.ComponentProps<typeof Button>["variant"]
}) {
  const defaultClassNames = getDefaultClassNames()

  return (
    <DayPicker
      showOutsideDays={showOutsideDays}
      className={cn(
        "bg-background group/calendar p-3 [--cell-size:--spacing(8)] [[data-slot=card-content]_&]:bg-transparent [[data-slot=popover-content]_&]:bg-transparent",
        String.raw`rtl:**:[.rdp-button\_next>svg]:rotate-180`,
        String.raw`rtl:**:[.rdp-button\_previous>svg]:rotate-180`,
        className
      )}
      captionLayout={captionLayout}
      formatters={{
        formatMonthDropdown: (date) =>
          date.toLocaleString("default", { month: "short" }),
        ...formatters,
      }}
      classNames={{
        root: cn("w-fit", defaultClassNames.root),
        months: cn(
          "flex gap-4 flex-col md:flex-row relative",
          defaultClassNames.months
        ),
        month: cn("flex flex-col w-full gap-4", defaultClassNames.month),
        nav: cn(
          "flex items-center gap-1 w-full absolute top-0 inset-x-0 justify-between",
          defaultClassNames.nav
        ),
        button_previous: cn(
          buttonVariants({ variant: buttonVariant }),
          "size-(--cell-size) aria-disabled:opacity-50 p-0 select-none",
          defaultClassNames.button_previous
        ),
        button_next: cn(
          buttonVariants({ variant: buttonVariant }),
          "size-(--cell-size) aria-disabled:opacity-50 p-0 select-none",
          defaultClassNames.button_next
        ),
        month_caption: cn(
          "flex items-center justify-center h-(--cell-size) w-full px-(--cell-size)",
          defaultClassNames.month_caption
        ),
        dropdowns: cn(
          "w-full flex items-center text-sm font-medium justify-center h-(--cell-size) gap-1.5",
          defaultClassNames.dropdowns
        ),
        dropdown_root: cn(
          "relative has-focus:border-ring border border-input shadow-xs has-focus:ring-ring/50 has-focus:ring-[3px] rounded-md",
          defaultClassNames.dropdown_root
        ),
        dropdown: cn("absolute inset-0 opacity-0", defaultClassNames.dropdown),
        caption_label: cn(
          "select-none font-medium",
          captionLayout === "label"
            ? "text-sm"
            : "rounded-md pl-2 pr-1 flex items-center gap-1 text-sm h-8 [&>svg]:text-muted-foreground [&>svg]:size-3.5",
          defaultClassNames.caption_label
        ),
        table: "w-full border-collapse",
        weekdays: cn("flex", defaultClassNames.weekdays),
        weekday: cn(
          "text-muted-foreground rounded-md flex-1 font-normal text-[0.8rem] select-none",
          defaultClassNames.weekday
        ),
        week: cn("flex w-full mt-2", defaultClassNames.week),
        week_number_header: cn(
          "select-none w-(--cell-size)",
          defaultClassNames.week_number_header
        ),
        week_number: cn(
          "text-[0.8rem] select-none text-muted-foreground",
          defaultClassNames.week_number
        ),
        day: cn(
          "relative w-full h-full p-0 text-center [&:first-child[data-selected=true]_button]:rounded-l-md [&:last-child[data-selected=true]_button]:rounded-r-md group/day aspect-square select-none",
          defaultClassNames.day
        ),
        range_start: cn(
          "rounded-l-md bg-accent",
          defaultClassNames.range_start
        ),
        range_middle: cn("rounded-none", defaultClassNames.range_middle),
        range_end: cn("rounded-r-md bg-accent", defaultClassNames.range_end),
        today: cn(
          "bg-accent text-accent-foreground rounded-md data-[selected=true]:rounded-none",
          defaultClassNames.today
        ),
        outside: cn(
          "text-muted-foreground aria-selected:text-muted-foreground",
          defaultClassNames.outside
        ),
        disabled: cn(
          "text-muted-foreground opacity-50",
          defaultClassNames.disabled
        ),
        hidden: cn("invisible", defaultClassNames.hidden),
        ...classNames,
      }}
      components={{
        Root: ({ className, rootRef, ...props }) => {
          return (
            <div
              data-slot="calendar"
              ref={rootRef}
              className={cn(className)}
              {...props}
            />
          )
        },
        Chevron: ({ className, orientation, ...props }) => {
          if (orientation === "left") {
            return (
              <ChevronLeftIcon className={cn("size-4", className)} {...props} />
            )
          }

          if (orientation === "right") {
            return (
              <ChevronRightIcon
                className={cn("size-4", className)}
                {...props}
              />
            )
          }

          return (
            <ChevronDownIcon className={cn("size-4", className)} {...props} />
          )
        },
        DayButton: CalendarDayButton,
        WeekNumber: ({ children, ...props }) => {
          return (
            <td {...props}>
              <div className="flex size-(--cell-size) items-center justify-center text-center">
                {children}
              </div>
            </td>
          )
        },
        ...components,
      }}
      {...props}
    />
  )
}

function CalendarDayButton({
  className,
  day,
  modifiers,
  ...props
}: React.ComponentProps<typeof DayButton>) {
  const defaultClassNames = getDefaultClassNames()

  const ref = React.useRef<HTMLButtonElement>(null)
  React.useEffect(() => {
    if (modifiers.focused) ref.current?.focus()
  }, [modifiers.focused])

  return (
    <Button
      ref={ref}
      variant="ghost"
      size="icon"
      data-day={day.date.toLocaleDateString()}
      data-selected-single={
        modifiers.selected &&
        !modifiers.range_start &&
        !modifiers.range_end &&
        !modifiers.range_middle
      }
      data-range-start={modifiers.range_start}
      data-range-end={modifiers.range_end}
      data-range-middle={modifiers.range_middle}
      className={cn(
        "data-[selected-single=true]:bg-primary data-[selected-single=true]:text-primary-foreground data-[range-middle=true]:bg-accent data-[range-middle=true]:text-accent-foreground data-[range-start=true]:bg-primary data-[range-start=true]:text-primary-foreground data-[range-end=true]:bg-primary data-[range-end=true]:text-primary-foreground group-data-[focused=true]/day:border-ring group-data-[focused=true]/day:ring-ring/50 dark:hover:text-accent-foreground flex aspect-square size-auto w-full min-w-(--cell-size) flex-col gap-1 leading-none font-normal group-data-[focused=true]/day:relative group-data-[focused=true]/day:z-10 group-data-[focused=true]/day:ring-[3px] data-[range-end=true]:rounded-md data-[range-end=true]:rounded-r-md data-[range-middle=true]:rounded-none data-[range-start=true]:rounded-md data-[range-start=true]:rounded-l-md [&>span]:text-xs [&>span]:opacity-70",
        defaultClassNames.day,
        className
      )}
      {...props}
    />
  )
}

Selected Date (With TimeZone)

The Calendar component accepts a timeZone prop to ensure dates are displayed and selected in the user's local timezone.

export function CalendarWithTimezone() {
  const [date, setDate] = React.useState<Date | undefined>(undefined)
  const [timeZone, setTimeZone] = React.useState<string | undefined>(undefined)
 
  React.useEffect(() => {
    setTimeZone(Intl.DateTimeFormat().resolvedOptions().timeZone)
  }, [])
 
  return (
    <Calendar
      mode="single"
      selected={date}
      onSelect={setDate}
      timeZone={timeZone}
    />
  )
}

Note: If you notice a selected date offset (for example, selecting the 20th highlights the 19th), make sure the timeZone prop is set to the user's local timezone.

Why client-side? The timezone is detected using Intl.DateTimeFormat().resolvedOptions().timeZone inside a useEffect to ensure compatibility with server-side rendering. Detecting the timezone during render would cause hydration mismatches, as the server and client may be in different timezones.

Examples

Range Calendar

June 2025
July 2025
"use client"

import * as React from "react"
import { type DateRange } from "react-day-picker"

import { Calendar } from "@/components/ui/calendar"

export function Calendar05() {
  const [dateRange, setDateRange] = React.useState<DateRange | undefined>({
    from: new Date(2025, 5, 12),
    to: new Date(2025, 6, 15),
  })

  return (
    <Calendar
      mode="range"
      defaultMonth={dateRange?.from}
      selected={dateRange}
      onSelect={setDateRange}
      numberOfMonths={2}
      className="rounded-lg border shadow-sm"
    />
  )
}

Month and Year Selector

June 2025
"use client"

import * as React from "react"

import { Calendar } from "@/components/ui/calendar"
import { Label } from "@/components/ui/label"
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select"

export function Calendar13() {
  const [dropdown, setDropdown] =
    React.useState<React.ComponentProps<typeof Calendar>["captionLayout"]>(
      "dropdown"
    )
  const [date, setDate] = React.useState<Date | undefined>(
    new Date(2025, 5, 12)
  )

  return (
    <div className="flex flex-col gap-4">
      <Calendar
        mode="single"
        defaultMonth={date}
        selected={date}
        onSelect={setDate}
        captionLayout={dropdown}
        className="rounded-lg border shadow-sm"
      />
      <div className="flex flex-col gap-3">
        <Label htmlFor="dropdown" className="px-1">
          Dropdown
        </Label>
        <Select
          value={dropdown}
          onValueChange={(value) =>
            setDropdown(
              value as React.ComponentProps<typeof Calendar>["captionLayout"]
            )
          }
        >
          <SelectTrigger
            id="dropdown"
            size="sm"
            className="bg-background w-full"
          >
            <SelectValue placeholder="Dropdown" />
          </SelectTrigger>
          <SelectContent align="center">
            <SelectItem value="dropdown">Month and Year</SelectItem>
            <SelectItem value="dropdown-months">Month Only</SelectItem>
            <SelectItem value="dropdown-years">Year Only</SelectItem>
          </SelectContent>
        </Select>
      </div>
    </div>
  )
}

Date of Birth Picker

"use client"

import * as React from "react"
import { ChevronDownIcon } from "lucide-react"

import { Button } from "@/components/ui/button"
import { Calendar } from "@/components/ui/calendar"
import { Label } from "@/components/ui/label"
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover"

export function Calendar22() {
  const [open, setOpen] = React.useState(false)
  const [date, setDate] = React.useState<Date | undefined>(undefined)

  return (
    <div className="flex flex-col gap-3">
      <Label htmlFor="date" className="px-1">
        Date of birth
      </Label>
      <Popover open={open} onOpenChange={setOpen}>
        <PopoverTrigger asChild>
          <Button
            variant="outline"
            id="date"
            className="w-48 justify-between font-normal"
          >
            {date ? date.toLocaleDateString() : "Select date"}
            <ChevronDownIcon />
          </Button>
        </PopoverTrigger>
        <PopoverContent className="w-auto overflow-hidden p-0" align="start">
          <Calendar
            mode="single"
            selected={date}
            captionLayout="dropdown"
            onSelect={(date) => {
              setDate(date)
              setOpen(false)
            }}
          />
        </PopoverContent>
      </Popover>
    </div>
  )
}

Date and Time Picker

"use client"

import * as React from "react"
import { ChevronDownIcon } from "lucide-react"

import { Button } from "@/components/ui/button"
import { Calendar } from "@/components/ui/calendar"
import { Input } from "@/components/ui/input"
import { Label } from "@/components/ui/label"
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover"

export function Calendar24() {
  const [open, setOpen] = React.useState(false)
  const [date, setDate] = React.useState<Date | undefined>(undefined)

  return (
    <div className="flex gap-4">
      <div className="flex flex-col gap-3">
        <Label htmlFor="date-picker" className="px-1">
          Date
        </Label>
        <Popover open={open} onOpenChange={setOpen}>
          <PopoverTrigger asChild>
            <Button
              variant="outline"
              id="date-picker"
              className="w-32 justify-between font-normal"
            >
              {date ? date.toLocaleDateString() : "Select date"}
              <ChevronDownIcon />
            </Button>
          </PopoverTrigger>
          <PopoverContent className="w-auto overflow-hidden p-0" align="start">
            <Calendar
              mode="single"
              selected={date}
              captionLayout="dropdown"
              onSelect={(date) => {
                setDate(date)
                setOpen(false)
              }}
            />
          </PopoverContent>
        </Popover>
      </div>
      <div className="flex flex-col gap-3">
        <Label htmlFor="time-picker" className="px-1">
          Time
        </Label>
        <Input
          type="time"
          id="time-picker"
          step="1"
          defaultValue="10:30:00"
          className="bg-background appearance-none [&::-webkit-calendar-picker-indicator]:hidden [&::-webkit-calendar-picker-indicator]:appearance-none"
        />
      </div>
    </div>
  )
}

Natural Language Picker

This component uses the chrono-node library to parse natural language dates.

Your post will be published on October 31, 2025.
"use client"

import * as React from "react"
import { parseDate } from "chrono-node"
import { CalendarIcon } from "lucide-react"

import { Button } from "@/components/ui/button"
import { Calendar } from "@/components/ui/calendar"
import { Input } from "@/components/ui/input"
import { Label } from "@/components/ui/label"
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover"

function formatDate(date: Date | undefined) {
  if (!date) {
    return ""
  }

  return date.toLocaleDateString("en-US", {
    day: "2-digit",
    month: "long",
    year: "numeric",
  })
}

export function Calendar29() {
  const [open, setOpen] = React.useState(false)
  const [value, setValue] = React.useState("In 2 days")
  const [date, setDate] = React.useState<Date | undefined>(
    parseDate(value) || undefined
  )
  const [month, setMonth] = React.useState<Date | undefined>(date)

  return (
    <div className="flex flex-col gap-3">
      <Label htmlFor="date" className="px-1">
        Schedule Date
      </Label>
      <div className="relative flex gap-2">
        <Input
          id="date"
          value={value}
          placeholder="Tomorrow or next week"
          className="bg-background pr-10"
          onChange={(e) => {
            setValue(e.target.value)
            const date = parseDate(e.target.value)
            if (date) {
              setDate(date)
              setMonth(date)
            }
          }}
          onKeyDown={(e) => {
            if (e.key === "ArrowDown") {
              e.preventDefault()
              setOpen(true)
            }
          }}
        />
        <Popover open={open} onOpenChange={setOpen}>
          <PopoverTrigger asChild>
            <Button
              id="date-picker"
              variant="ghost"
              className="absolute top-1/2 right-2 size-6 -translate-y-1/2"
            >
              <CalendarIcon className="size-3.5" />
              <span className="sr-only">Select date</span>
            </Button>
          </PopoverTrigger>
          <PopoverContent className="w-auto overflow-hidden p-0" align="end">
            <Calendar
              mode="single"
              selected={date}
              captionLayout="dropdown"
              month={month}
              onMonthChange={setMonth}
              onSelect={(date) => {
                setDate(date)
                setValue(formatDate(date))
                setOpen(false)
              }}
            />
          </PopoverContent>
        </Popover>
      </div>
      <div className="text-muted-foreground px-1 text-sm">
        Your post will be published on{" "}
        <span className="font-medium">{formatDate(date)}</span>.
      </div>
    </div>
  )
}

Custom Cell Size

October 2025
"use client"

import * as React from "react"

import { Calendar } from "@/components/ui/calendar"

export function Calendar18() {
  const [date, setDate] = React.useState<Date | undefined>(
    new Date(2025, 5, 12)
  )

  return (
    <Calendar
      mode="single"
      selected={date}
      onSelect={setDate}
      className="rounded-lg border [--cell-size:--spacing(11)] md:[--cell-size:--spacing(12)]"
      buttonVariant="ghost"
    />
  )
}

You can customize the size of calendar cells using the --cell-size CSS variable. You can also make it responsive by using breakpoint-specific values:

<Calendar
  mode="single"
  selected={date}
  onSelect={setDate}
  className="rounded-lg border [--cell-size:--spacing(11)] md:[--cell-size:--spacing(12)]"
/>

Or use fixed values:

<Calendar
  mode="single"
  selected={date}
  onSelect={setDate}
  className="rounded-lg border [--cell-size:2.75rem] md:[--cell-size:3rem]"
/>

Upgrade Guide

Tailwind v4

If you're already using Tailwind v4, you can upgrade to the latest version of the Calendar component by running the following command:

pnpm dlx shadcn@latest add calendar

When you're prompted to overwrite the existing Calendar component, select Yes. If you have made any changes to the Calendar component, you will need to merge your changes with the new version.

This will update the Calendar component and react-day-picker to the latest version.

Next, follow the React DayPicker upgrade guide to upgrade your existing components to the latest version.

Installing Blocks

After upgrading the Calendar component, you can install the new blocks by running the shadcn@latest add command.

pnpm dlx shadcn@latest add calendar-02

This will install the latest version of the calendar blocks.

Tailwind v3

If you're using Tailwind v3, you can upgrade to the latest version of the Calendar by copying the following code to your calendar.tsx file.

components/ui/calendar.tsx
"use client"
 
import * as React from "react"
import {
  ChevronDownIcon,
  ChevronLeftIcon,
  ChevronRightIcon,
} from "lucide-react"
import { DayButton, DayPicker, getDefaultClassNames } from "react-day-picker"
 
import { cn } from "@/lib/utils"
import { Button, buttonVariants } from "@/components/ui/button"
 
function Calendar({
  className,
  classNames,
  showOutsideDays = true,
  captionLayout = "label",
  buttonVariant = "ghost",
  formatters,
  components,
  ...props
}: React.ComponentProps<typeof DayPicker> & {
  buttonVariant?: React.ComponentProps<typeof Button>["variant"]
}) {
  const defaultClassNames = getDefaultClassNames()
 
  return (
    <DayPicker
      showOutsideDays={showOutsideDays}
      className={cn(
        "bg-background group/calendar p-3 [--cell-size:2rem] [[data-slot=card-content]_&]:bg-transparent [[data-slot=popover-content]_&]:bg-transparent",
        String.raw`rtl:**:[.rdp-button\_next>svg]:rotate-180`,
        String.raw`rtl:**:[.rdp-button\_previous>svg]:rotate-180`,
        className
      )}
      captionLayout={captionLayout}
      formatters={{
        formatMonthDropdown: (date) =>
          date.toLocaleString("default", { month: "short" }),
        ...formatters,
      }}
      classNames={{
        root: cn("w-fit", defaultClassNames.root),
        months: cn(
          "relative flex flex-col gap-4 md:flex-row",
          defaultClassNames.months
        ),
        month: cn("flex w-full flex-col gap-4", defaultClassNames.month),
        nav: cn(
          "absolute inset-x-0 top-0 flex w-full items-center justify-between gap-1",
          defaultClassNames.nav
        ),
        button_previous: cn(
          buttonVariants({ variant: buttonVariant }),
          "h-[--cell-size] w-[--cell-size] select-none p-0 aria-disabled:opacity-50",
          defaultClassNames.button_previous
        ),
        button_next: cn(
          buttonVariants({ variant: buttonVariant }),
          "h-[--cell-size] w-[--cell-size] select-none p-0 aria-disabled:opacity-50",
          defaultClassNames.button_next
        ),
        month_caption: cn(
          "flex h-[--cell-size] w-full items-center justify-center px-[--cell-size]",
          defaultClassNames.month_caption
        ),
        dropdowns: cn(
          "flex h-[--cell-size] w-full items-center justify-center gap-1.5 text-sm font-medium",
          defaultClassNames.dropdowns
        ),
        dropdown_root: cn(
          "has-focus:border-ring border-input shadow-xs has-focus:ring-ring/50 has-focus:ring-[3px] relative rounded-md border",
          defaultClassNames.dropdown_root
        ),
        dropdown: cn("absolute inset-0 opacity-0", defaultClassNames.dropdown),
        caption_label: cn(
          "select-none font-medium",
          captionLayout === "label"
            ? "text-sm"
            : "[&>svg]:text-muted-foreground flex h-8 items-center gap-1 rounded-md pl-2 pr-1 text-sm [&>svg]:size-3.5",
          defaultClassNames.caption_label
        ),
        table: "w-full border-collapse",
        weekdays: cn("flex", defaultClassNames.weekdays),
        weekday: cn(
          "text-muted-foreground flex-1 select-none rounded-md text-[0.8rem] font-normal",
          defaultClassNames.weekday
        ),
        week: cn("mt-2 flex w-full", defaultClassNames.week),
        week_number_header: cn(
          "w-[--cell-size] select-none",
          defaultClassNames.week_number_header
        ),
        week_number: cn(
          "text-muted-foreground select-none text-[0.8rem]",
          defaultClassNames.week_number
        ),
        day: cn(
          "relative w-full h-full p-0 text-center [&:last-child[data-selected=true]_button]:rounded-r-md group/day aspect-square select-none",
          props.showWeekNumber
            ? "[&:nth-child(2)[data-selected=true]_button]:rounded-l-md"
            : "[&:first-child[data-selected=true]_button]:rounded-l-md",
          defaultClassNames.day
        ),
        range_start: cn(
          "bg-accent rounded-l-md",
          defaultClassNames.range_start
        ),
        range_middle: cn("rounded-none", defaultClassNames.range_middle),
        range_end: cn("bg-accent rounded-r-md", defaultClassNames.range_end),
        today: cn(
          "bg-accent text-accent-foreground rounded-md data-[selected=true]:rounded-none",
          defaultClassNames.today
        ),
        outside: cn(
          "text-muted-foreground aria-selected:text-muted-foreground",
          defaultClassNames.outside
        ),
        disabled: cn(
          "text-muted-foreground opacity-50",
          defaultClassNames.disabled
        ),
        hidden: cn("invisible", defaultClassNames.hidden),
        ...classNames,
      }}
      components={{
        Root: ({ className, rootRef, ...props }) => {
          return (
            <div
              data-slot="calendar"
              ref={rootRef}
              className={cn(className)}
              {...props}
            />
          )
        },
        Chevron: ({ className, orientation, ...props }) => {
          if (orientation === "left") {
            return (
              <ChevronLeftIcon className={cn("size-4", className)} {...props} />
            )
          }
 
          if (orientation === "right") {
            return (
              <ChevronRightIcon
                className={cn("size-4", className)}
                {...props}
              />
            )
          }
 
          return (
            <ChevronDownIcon className={cn("size-4", className)} {...props} />
          )
        },
        DayButton: CalendarDayButton,
        WeekNumber: ({ children, ...props }) => {
          return (
            <td {...props}>
              <div className="flex size-[--cell-size] items-center justify-center text-center">
                {children}
              </div>
            </td>
          )
        },
        ...components,
      }}
      {...props}
    />
  )
}
 
function CalendarDayButton({
  className,
  day,
  modifiers,
  ...props
}: React.ComponentProps<typeof DayButton>) {
  const defaultClassNames = getDefaultClassNames()
 
  const ref = React.useRef<HTMLButtonElement>(null)
  React.useEffect(() => {
    if (modifiers.focused) ref.current?.focus()
  }, [modifiers.focused])
 
  return (
    <Button
      ref={ref}
      variant="ghost"
      size="icon"
      data-day={day.date.toLocaleDateString()}
      data-selected-single={
        modifiers.selected &&
        !modifiers.range_start &&
        !modifiers.range_end &&
        !modifiers.range_middle
      }
      data-range-start={modifiers.range_start}
      data-range-end={modifiers.range_end}
      data-range-middle={modifiers.range_middle}
      className={cn(
        "data-[selected-single=true]:bg-primary data-[selected-single=true]:text-primary-foreground data-[range-middle=true]:bg-accent data-[range-middle=true]:text-accent-foreground data-[range-start=true]:bg-primary data-[range-start=true]:text-primary-foreground data-[range-end=true]:bg-primary data-[range-end=true]:text-primary-foreground group-data-[focused=true]/day:border-ring group-data-[focused=true]/day:ring-ring/50 flex aspect-square h-auto w-full min-w-[--cell-size] flex-col gap-1 font-normal leading-none data-[range-end=true]:rounded-md data-[range-middle=true]:rounded-none data-[range-start=true]:rounded-md group-data-[focused=true]/day:relative group-data-[focused=true]/day:z-10 group-data-[focused=true]/day:ring-[3px] [&>span]:text-xs [&>span]:opacity-70",
        defaultClassNames.day,
        className
      )}
      {...props}
    />
  )
}
 
export { Calendar, CalendarDayButton }

If you have made any changes to the Calendar component, you will need to merge your changes with the new version.

Then follow the React DayPicker upgrade guide to upgrade your dependencies and existing components to the latest version.

Installing Blocks

After upgrading the Calendar component, you can install the new blocks by running the shadcn@latest add command.

pnpm dlx shadcn@latest add calendar-02

This will install the latest version of the calendar blocks.

Changelog

2025-10-26 Fixed day radius with week numbers

We have fixed an issue where the selected day's left border radius was not applied correctly when week numbers were displayed. The fix ensures that when showWeekNumber is enabled, the first day (which is the second child due to the week number column) correctly receives the rounded left border.

To apply this fix, edit components/ui/calendar.tsx and update the day class in classNames:

components/ui/calendar.tsx
classNames={{
  // ... other classNames
  day: cn(
    "relative w-full h-full p-0 text-center [&:last-child[data-selected=true]_button]:rounded-r-md group/day aspect-square select-none",
    props.showWeekNumber
      ? "[&:nth-child(2)[data-selected=true]_button]:rounded-l-md"
      : "[&:first-child[data-selected=true]_button]:rounded-l-md",
    defaultClassNames.day
  ),
  // ... other classNames
}}