DateTime.IsInNextSecond Function in Power Query

The DateTime.IsInNextSecond function in Power Query indicates whether the given datetime value occurs during the next second, as determined by the current date and time on the system.

Syntax

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

Example: Determine if the second after the current system time is in the next second.

Power Query M

let
    Source = DateTime.IsInNextSecond(DateTime.FixedLocalNow() + #duration(0, 0, 0, 1))
in
    Source   

The output of the above code TRUE.

Note: This function will return FALSE when passed a value that occurs within the current second.