I have a calendar table generated through CALENDARAUTO( ) and then adding a column
MonthName = FORMAT([Date], "mmm").
My OS regional setting is not US. I selected English (US) in Options-->Current file -->Regional Settings.
The MonthName column shows the name in English. The [Date] column, however, when in long format, shows the name of day and month in the regional language.
How can I change this to be shown in English?
As we know, CALENDARAUTO returns a table with a single date column whose range is calculated automatically based on data in the model. I guess the date column in other table in current data model is formatted with a different languate, the same as your OS regional setting. The data model language is inherited from data source, it is not available to change it with DAX.
In your scenario, I would suggest you use CALENDAR() instead of CALENDARAUTO. For example, if there existing a table called 'DataTable' containing a date column [DateValue], then, you could new a calendar table likw below:
Dim Date = ADDCOLUMNS ( CALENDAR ( MIN ( DataTable[DateValue] ), MAX ( DateTable[DateValue] ) ), "MonthName", FORMAT ( [Date], "mmm" ) )