Subversion date range returning odd results

SVN seems to have a very straightforward way to return information from a date range. I was working on automating some of our deployment process, and I was trying to gather information from the SVN log. I tried this:

svn log --xml -r {2011-10-10}:{2011-10-11} https://somerepourl

this is what returned:

<?xml version="1.0"?>
<log>
  <logentry revision="2531">
    <author>dio</author>
    <date>2011-10-07T00:09:54.070899Z</date>
    <msg>Updated targets file to use branch dependencies.</msg>
  </logentry>
  <logentry revision="2532">
    <author>dio</author>
    <date>2011-10-10T20:16:25.505299Z</date>
    <msg>Refactored Account Name validation.</msg>
  </logentry>
  <!-- etc etc -->
</log>

开发者_Python百科Now, the second result I expect, the date is within the range I requested, but the first result makes no sense to me, it's from several days ago. I checked the svn docs, but it makes no mention of returning dates outside of your range.

Has anyone encountered this issue before? I'm using SVN version 1.6.9

---

The output of svn h log says:

'{' DATE '}' revision at start of the date

It does NOT say: "first revision after DATE".

So, at 2011-10-10 00:00:00 the revision r2531 was "active", therefore it is shown.