up/dn arrow usage on date column(s) is noted as inconsistent with de-facto convention; but conforming to convention for convention's sake is low priority given that functionality is present.
(and, yes, you point out an obvious ambiguity with the de-facto usage of up/dn arrows visually indicating a perspective 'from the bottom' -- but, nevertheless, it is the de-facto convention.
Becoming conventional is one of the low priority tasks to be addressed some time in the future (at the whim of the author) between alpha and beta release.
