<!--
{
  "availability" : [
    "iOS: 8.0.0 -",
    "iPadOS: 8.0.0 -",
    "macCatalyst: 8.0.0 -",
    "macOS: 10.9.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 2.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Foundation",
  "identifier" : "/documentation/Foundation/DateComponents/isValidDate(in:)",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "Foundation"
    ],
    "preciseIdentifier" : "s:10Foundation14DateComponentsV07isValidB02inSbAA8CalendarV_tF"
  },
  "title" : "isValidDate(in:)"
}
-->

# isValidDate(in:)

Indicates whether the current combination of properties represents a date which exists in the specified calendar.

```
func isValidDate(in calendar: Calendar) -> Bool
```

## Discussion

This method is not appropriate for use on `DateComponents` values which are specifying relative quantities of calendar components.

Except for some trivial cases (e.g., ‘seconds’ should be 0 - 59 in any calendar), this method is not necessarily cheap.

If the time zone property is set in the `DateComponents`, it is used.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)