Relative date identifier incorrect in an issue's Activity tab

"This Tuesday" appears to be incorrectly identified as "Last Tuesday". See attached screenshot.

Today is Friday 2013-Aug-02. As of now and according to my understanding of relative dates, "last Tuesday" was the Tuesday before this week's Tuesday, i.e. 2013-Jul-23. JIRA seems to be identifying 2013-Jul-30 as "last Tuesday", which I would normally call "this Tuesday" because it is the Tuesday that falls in the current week.

I find relative date identifiers in JIRA to be inconvenient because they make me look at a calendar or wait for hover text to find out the specific date something happened on, when it should be an effortless thing. Dates are intrinsic to what JIRA does - the management of work over time - and they need to be unambiguous and easy to interpret.

I just took a straw poll of three adjacent Atlassians. Two of us thought "last Tuesday" was 2013-Jul-23 and two of us thought it was 2013-Jul-30.

I think it is a good idea to remove relative date identifiers entirely and use specific dates instead.