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
npx @gentleduck/cli add calendar
npx @gentleduck/cli add calendar
Usage
import { Calendar } from "@/components/ui/calendar"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"
/>
)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"- import { DayPicker } from "react-day-picker"
+ import { DayPicker } from "react-day-picker/persian"Examples
Range Calendar
Month and Year Selector
Date of Birth Picker
Date and Time Picker
Natural Language Picker
This component uses the chrono-node library to parse natural language dates.
Your post will be published on December 12, 2025.
Form
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:
npx @gentleduck/cli@latest add calendar
npx @gentleduck/cli@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 @gentleduck/cli@latest add command.
npx @gentleduck/cli@latest add calendar-02
npx @gentleduck/cli@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(
"group/day relative aspect-square h-full w-full select-none p-0 text-center [&:first-child[data-selected=true]_button]:rounded-l-md [&:last-child[data-selected=true]_button]:rounded-r-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 }// 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(
"group/day relative aspect-square h-full w-full select-none p-0 text-center [&:first-child[data-selected=true]_button]:rounded-l-md [&:last-child[data-selected=true]_button]:rounded-r-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 @gentleduck/cli@latest add command.
npx @gentleduck/cli@latest add calendar-02
npx @gentleduck/cli@latest add calendar-02
This will install the latest version of the calendar blocks.
API Reference
Calendar
buttonVariant(React.ComponentProps<typeof Button>['variant'], optional): Variant style for the calendar’s navigation buttons. Default:'ghost'.className(string, optional): Additional class names for the root calendar container.classNames(Partial<ReturnType<typeof getDefaultClassNames>>, optional): Overrides for internal DayPicker class names.showOutsideDays(boolean, optional): Whether to show days from the previous/next month in the current month view. Default:true.captionLayout('buttons' | 'dropdown' | 'label', optional): Layout for the month/year caption. Default:'label'.formatters(DayPicker['formatters'], optional): Custom formatting functions for dates and labels.components(DayPicker['components'], optional): Custom component overrides for internal DayPicker parts....props(React.ComponentProps<typeof DayPicker>): All otherreact-day-pickerprops.
Behavior:
- Wraps
react-day-pickerwith GentleDuck styles and design system tokens. - Custom navigation icons (
ChevronLeftIcon,ChevronRightIcon,ChevronDownIcon). - Fully themeable via
classNamesandbuttonVariant. - Supports date ranges, single-date selection, and week numbers.
- Automatically focuses the currently highlighted day.
CalendarDayButton
day(DateObj, required): The date object for this cell fromreact-day-picker.modifiers(DayModifiers, required): Selection and state flags for the day (e.g.,selected,range_start).className(string, optional): Additional class names for styling the day button....props(React.ComponentProps<typeof DayButton>): NativeDayButtonprops fromreact-day-picker.
Behavior:
- Uses the GentleDuck
<Button>component for consistent button styles. - Supports range highlighting (
data-range-start,data-range-middle,data-range-end). - Adds a unique
data-dayattribute for identifying each date cell. - Applies focus ring styles when the day is keyboard-focused.
- Shows selection and range colors consistent with design system tokens.