Date.IsInPreviousDay is a Power Query M function that indicates whether the given date(time) value occurs during the previous day, as determined by the system. The function returns a boolean value (true or false).

Compatible with: Power BI Service Power BI Desktop Excel Microsoft 365


Date.IsInPreviousDay( dateTime as any ) as nullable logical


Indicates whether the given datetime value dateTime occurs during the previous day, as determined by the current date and time on the system. Note that this function will return false when passed a value that occurs within the current day.

  • dateTime: A date, datetime, or datetimezone value to be evaluated.


Determine if the day before the current system time is in the previous day.

// Output: true
Date.IsInPreviousDay( Date.AddDays( DateTime.FixedLocalNow(), -1 ) )

Other functions related to Date.IsInPreviousDay are:

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Last update: August 25, 2023 | Contribute » | Contributors: Rick de Groot
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