Dax Dates question

[ryand009]

Hello

My date table (tblCalendar) is calculated between the min and max dates in another table. The Max date is 28/October/2022 (today). I created 2 measures , a YTD count and a ThisTimeLastYear count, but the ThisTimeLastYear is giving incorrect results, so I used the following DAX to return the dates … 

EVALUATE
VAR StartDate = DATE ( 2022, 01, 01 )
VAR EndDate = DATE ( 2022, 10, 28 )
RETURN
    CALCULATETABLE (
        DATEADD ( tblCalendar[Date], -1, YEAR ),
        tblCalendar[Date] >= StartDate &&
        tblCalendar[Date] <= EndDate
    )
ORDER BY [Date] DESC

If I use and EndDate of October 28 2022, it returns 3 additional dates October 29, 30 and 31, even though these dates are not in any table? All other dates I’ve tested return the expected range. January 2022 has the same structure as October 2022, i.e. Jan 1 /Oct 1 are Saturday and Jan 31 /Oct 31 are Monday, and the January results are as expected.

I’ve been looking at this for a couple of hours and I can’t figure any reason for the 3 extra dates?

Any ideas

Thanks in advance.

[bcdobbs · Accepted solution]

Does your date table contain full years? Eg 1 Jan to 31 Dec? Also is it marked as a date table?