Date.IsInPreviousNWeeks

Date.IsInPreviousNWeeks is a Power Query M function that indicates whether the given date(time) value occurs during the previous number of weeks, 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

Syntax

Date.IsInPreviousNWeeks(
   dateTime as any,
   weeks as number,
) as nullable logical

Description

Indicates whether the given datetime value dateTime occurs during the previous number of weeks, 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 week.

• dateTime: A date, datetime, or datetimezone value to be evaluated.
• weeks: The number of weeks.

Examples

Determine if the week before the current system time is in the previous two weeks.

// Output: true
Date.IsInPreviousNWeeks( Date.AddDays( DateTime.FixedLocalNow(), -7 ), 2 )

Related functions

Other functions related to Date.IsInPreviousNWeeks are:

• Date.IsInPreviousNDays
• Date.IsInPreviousNMonths
• Date.IsInPreviousNQuarters
• Date.IsInPreviousNYears

Last update: August 25, 2023 | Contribute » | Contributors: Rick de Groot
Microsoft documentation: https://learn.microsoft.com/en-us/powerquery-m/date-isinpreviousnweeks
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