---
title: "dateIsDaylight"
description: "Checks to see if the current timezone is using daylight savings time during the date specified."
---

# dateIsDaylight

> Checks to see if the current timezone is using daylight savings time during the date specified.

**This function is used by Ignition's Expression language.**
## Description
Checks to see if the current timezone is using daylight savings time during the date specified. Will use the current date if no date is specified.

## Syntax
`dateIsDaylight([date])`

- Parameters
    - Date **date** - Optional. The date to use. Will use the current date if omitted.

- Results
    - Bool - True if the current timezone is using daylight savings time during the specified date.

## Code Examples
```python title="Code Snippet"
dateIsDaylight(toDate("2007-06-28 00:00:00")) //Will print True in the US Pacific Timezone.
```