Axis Shows The Previous Date Of The Mark When Filter Date To 2 Days

Issue

When filter date to 2 days, the axis shows the previous date of the marks

For example:
filter Order Date to 2020/12/29 - 2020/12/30, the axis shows 2020/12/28 and 2020/12/29

User-added image

Environment

Tableau Desktop

Resolution

Option 1

Right click on DAY([Order Date]) and change to Exact Date

User-added image

Option 2

Right click on DAY([Order Date]) and change to Discrete

User-added image

Option 3

Right click on axis Day of Order Date > Edit, and set Fixed end as bellow

User-added image

Cause

For continuous date axis with automatic range, Tableau Desktop will keep blank space at both end.
Therefore, when filter Order Date to 2020/12/29 - 2020/12/30, the range of axis turns to 2020/12/28 10:45:03 PM - 2020/12/30 1:14:56 AM,
while the mark will be put at 2020/12/29 00:00:00 and 2020/12/30 00:00:00.
Meanwhile, the space of axis is only enough to show 2 dates, because it needs 24 hours of axis between 2 dates, but the range of axis is only 26.5 hours.
Thus, the axis only shows 1st date (2020/12/28) and 2nd date (2020/12/29), and because the position of the date showed on axis is near 00:00:00 of the next day, it looks like the mark is put on previous date.

User-added image