Date.DayOfWeekName is a function in the Power Query M language that returns the name of the day of the week for a provided date. An optional culture may also be provided.
Compatible with: Power BI Service Power BI Desktop Excel Microsoft 365
Date.DayOfWeekName( date as any, optional culture as nullable text, ) as nullable text
|culture||optional||The culture argument enables the specification of a Culture code (e.g., “nl-NL” or “en-US”) to align transformations with local formatting conventions. If this argument is omitted, functions default to Culture.Current, which reflects the system’s regional settings.|