diff -r d4848d807fd1 -r 751e3fcd11d2 utils.py
--- a/utils.py	Wed Feb 11 23:38:05 2009 +0200
+++ b/utils.py	Thu Feb 12 00:16:52 2009 +0200
@@ -35,9 +35,12 @@
 
 class URLDateType (URLType) :
     """
-        Handle dates in URLs as naive datetime objects (with indeterminate time info)
+        Handle dates in URLs as shortened UTC datetime timestamps
     """
 
+    # percision = hour
+    SCALE = 60 * 60
+
     def __init__ (self, date_fmt) :
         """
             Format/parse dates using the given format
@@ -45,19 +48,27 @@
 
         self.date_fmt = date_fmt
     
-    def parse (self, date_str) :
+    def parse (self, sts_str) :
         """
-            date_str -> naive datetime.datetime
+            short_timestamp_str -> datetime.datetime
         """
         
-        return datetime.datetime.strptime(date_str, self.date_fmt)
+        # scale -> from_utc + return
+        return from_utc_timestamp(int(sts_str) * self.SCALE)
     
-    def build (self, date) :
+    def build (self, dtz) :
         """
-            datetime.date -> date_str
+            datetime.datetime -> short_timestamp_str
         """
 
-        return date.strftime(self.date_fmt)
+        # force it to be interpreted as UTC
+        dt_utc = dtz.replace(tzinfo=pytz.utc)
+        
+        # scale the UTC timestamp
+        sts = to_utc_timestamp(dt_utc) / self.SCALE
+        
+        # str
+        return str(sts)
 
 class URLTimestampType (URLType) :
     """