---
title: "isDaylightSavingTime(for:)"
framework: foundation
role: symbol
role_heading: Instance Method
path: "foundation/timezone/isdaylightsavingtime(for:)"
---

# isDaylightSavingTime(for:)

Returns a Boolean value that indicates whether the receiver uses daylight saving time at a given date.

## Declaration

```swift
func isDaylightSavingTime(for date: Date = Date()) -> Bool
```

## Parameters

- `date`: The date to use for the calculation. The default value is the current date.

## See Also

### Working with Daylight Savings

- [daylightSavingTimeOffset(for:)](foundation/timezone/daylightsavingtimeoffset(for:).md)
- [nextDaylightSavingTimeTransition](foundation/timezone/nextdaylightsavingtimetransition.md)
- [nextDaylightSavingTimeTransition(after:)](foundation/timezone/nextdaylightsavingtimetransition(after:).md)