I just ran into (at least one variation of) this phenomena and believe I know
what's going on.
When a date range is used, the first thing that svn does is decide which
revision to start the log from. It does this by taking a snapshot of the
HEAD revision AT THE START TIME specified. Not the first
27;s not a bug. See:
>
>
> http://svnbook.red-bean.com/nightly/en/svn.tour.revs.specifiers.html#svn.tour.revs.dates
>
> for some more information (more specifically in the section "Is
> Subversion a Day Early?")
>
> Cheers,
> Johan
>
> On Wed, Apr 27, 2011 a