| numberOfMonths | number | undefined | 1 | Number of months to display simultaneously (1–12). |
| fixedWeeks | boolean | undefined | false | When true, always render 6 week rows per month grid.
Prevents layout shifts when navigating between months. |
| outsideDays | OutsideDays | undefined | "enabled" | Controls how days from adjacent months are displayed. |
| outOfRangeBehavior | MonthOutOfRangeBehavior | undefined | "unbounded" | How month navigation behaves at the min/max bounds. min/max always
restrict which **days are selectable**; this controls whether you can still
**view** months outside them. See MonthOutOfRangeBehavior.
- "unbounded" — Prev/Next are never disabled by min/max; you can page
to any month, with out-of-range days rendered disabled.
- "stop" — Prev/Next disable once the destination month crosses the bound. |
| month | PlainYearMonth | undefined | — | The controlled visible month. When provided, the component is controlled.
Interpreted in the ISO calendar (the year/month are read as ISO values).
The locale only affects how the month is displayed, so this value
round-trips directly with onMonthChange. |
| defaultMonth | PlainYearMonth | undefined | — | The initial visible month (uncontrolled). Interpreted in the ISO calendar. |
| onMonthChange | ((month: PlainYearMonth) => void) | undefined | — | Called when the visible month changes via navigation or focus movement.
Not called on initial mount. The argument is an ISO PlainYearMonth. |
| children | React.ReactNode | — | React children. |