DateTime.IsInPreviousNSeconds is a Power Query M function that indicates whether the provided date(time) value occurs during the previous number of seconds specified. The function returns true if the value occurs within the specified seconds, otherwise false.

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


   dateTime as any,
   seconds as number,
) as nullable logical


Indicates whether the given datetime value dateTime occurs during the previous number of seconds, 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 second.

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


Determine if the second before the current system time is in the previous two seconds.

// Output: true
DateTime.IsInPreviousNSeconds( DateTime.FixedLocalNow() - #duration( 0, 0, 0, 2 ), 2 )

Other functions related to DateTime.IsInPreviousNSeconds are:

BI Gorilla Blog

Last update: August 25, 2023 | Contribute » | Contributors: Rick de Groot
Microsoft documentation:
© 2023 BI Gorilla. All rights reserved. Content derived from Microsoft documentation is property of Microsoft Corp.