DateTime.FixedLocalNow Function in Power Query
The DateTime.FixedLocalNow function in Power Query returns a DateTime value set to the current date and time on the system.
Syntax
 DateTime.FixedLocalNow() as datetime 
Example:
Power Query M
let
    Source = DateTime.FixedLocalNow()
in
    Source      The output of the above code is the current date and time in the system.