From patches ML, Philip Gladstone writes:

Brief outline:

When you do a wget from an ftp: url, it tries to copy over the last modified date of the file (this is good). However, due to timezone issues, the date that it gets can sometimes be in the future, and then it guesses the year incorrectly. This patch fixes that problem.

--- wget-1.10.2/src/ftp-ls.c        2005-08-04 17:52:33.000000000 -0400
+++ wget-1.10.2-fixed/src/ftp-ls.c        2006-10-28 15:09:58.000000000 -0400
@@ -410,10 +410,19 @@
              is 97-01-12, and you see a file of Dec 15th, its year is
              1996, not 1997.  Thanks to Vladimir Volovich for
              mentioning this!  */
-          if (month > tnow->tm_mon)
-            timestruct.tm_year = tnow->tm_year - 1;
-          else
-            timestruct.tm_year = tnow->tm_year;
+          /* However, due to timezone differences, you can get files for
+             up to 24 hours in the future. If these cross a month or year
+             end, then you have problems - pjsg */
+          if (day == 1 && month == ((tnow->tm_mon + 1) % 12))
+            if (month == 0)
+              timestruct.tm_year = tnow->tm_year + 1;
+            else
+              timestruct.tm_year = tnow->tm_year;
+          else
+            if (month > tnow->tm_mon)
+              timestruct.tm_year = tnow->tm_year - 1;
+            else
+              timestruct.tm_year = tnow->tm_year;
         }
       else
         timestruct.tm_year = year;