Skip to main content
Version: 8.1


This function is used by Ignition's Expression language.


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.



  • Parameters

    • Date date - The date to use. Will use the current date if omitted. [optional]
  • Results

    • Boolean - True if the current time zone is using Daylight Saving Time during the specified date.

Code Examples

Code Snippet
dateIsDaylight(toDate("2007-06-28 00:00:00")) // Will return True in the US/Pacific Timezone, due to that time zone's observation of Daylight Saving Time on the specified date.