diff --git a/CTDOTools/ctdotools/utils.py b/CTDOTools/ctdotools/utils.py
index 2c35c57..4dc4dfd 100644
--- a/CTDOTools/ctdotools/utils.py
+++ b/CTDOTools/ctdotools/utils.py
@@ -133,21 +133,14 @@ def time_parse(arg):
 
 
 def datetime_parse(arg, tzinfo=utc):
-    """converts a datetime string of form dd.mm.yyyy MM:HH into a
+    """converts a datetime string of form dd.mm.yyyy MM:HH into a localized
     datetime.datetime obj"""
 
     # get real tzinfo for the date taking dst into account
-    arg = datetime.strptime(arg, "%d.%m.%Y %H:%M").replace(tzinfo=tzinfo)
-    return local_to_utc(arg, tzinfo)
+    astimezone = tzinfo.localize(datetime.strptime(arg, "%d.%m.%Y %H:%M")).astimezone(utc)
+    return astimezone
 
 
-def local_to_utc(arg, tzinfo=utc):
-    """converts local datetime to utc datetime"""
-
-    real_tz = tzinfo.fromutc(arg).tzinfo
-    return datetime(arg.year, arg.month, arg.day, arg.hour, arg.minute,
-        arg.second, tzinfo=real_tz).astimezone(utc)
-
 
 def get_tz(session_tzname):
     """returns the timezone name and the timezone of the actual trac session"""
diff --git a/TracBooking/tracbooking/report.py b/TracBooking/tracbooking/report.py
index 17f4300..3fd9c9d 100644
--- a/TracBooking/tracbooking/report.py
+++ b/TracBooking/tracbooking/report.py
@@ -17,7 +17,7 @@ def add_doc(global_event, selected_tz, f):
     #f.write(u".. header::\n")
     #f.write(u"    ###Page###\n")
     #f.write(u"    ###Title###\n")
-    dt = selected_tz.fromutc(datetime.now(utc)).strftime("%d.%m.%Y %H:%M")
+    dt = utc.localize(datetime.utcnow()).strftime("%d.%m.%Y %H:%M")
     d = u"Erstellt am: %s\n\n" % dt
     f.write(d)
 
diff --git a/TracRendezVous/tracrendezvous/event/macros.py b/TracRendezVous/tracrendezvous/event/macros.py
index be9d550..4ceb94f 100644
--- a/TracRendezVous/tracrendezvous/event/macros.py
+++ b/TracRendezVous/tracrendezvous/event/macros.py
@@ -37,8 +37,8 @@ a.existing_occurence, a.existing-occurence:visited {color:#00f;}
         if hasattr(event, "followups"):
             l = []
             for ev in event.followups:
-                local_time_begin = selected_tz.fromutc(ev.time_begin)
-                local_time_end = selected_tz.fromutc(ev.time_end)
+                local_time_begin = ev.time_begin.astimezone(selected_tz)
+                local_time_end = ev.time_end.astimezone(selected_tz)
                 link_label = "%s %s - %s %s" % (local_time_begin.strftime("%d.%m.%Y %H:%M"), local_time_begin.tzinfo.tzname(None), local_time_end.strftime("%d.%m.%Y %H:%M"), local_time_end.tzinfo.tzname(None))
                 link = "events/%s/%s" % (event.e_id, ev.time_begin.strftime("%Y-%m-%d"))
                 if WikiSystem(self.env).has_page(link):
@@ -217,8 +217,8 @@ table.wiki-calendar :link,table.wiki-calendar :visited {color: #000 !important;f
         session_tzname, selected_tz = get_tz(formatter.req.session.get('tz', self.env.config.get("trac", "default_timezone") or None))
         def _f(t):
             assert type(t) == Event
-            real_begin = selected_tz.fromutc(t.time_begin)
-            real_end = selected_tz.fromutc(t.time_end)
+            real_begin = t.time_begin.astimezone(selected_tz)
+            real_end = t.time_end.astimezone(selected_tz)
             return u'<li><a href="%s" title="%s - %s %s">%s:<br/>%s</a></li>' % (formatter.href.event(t.e_id), real_begin.strftime("%d.%m.%Y %H:%M"), real_end.strftime("%d.%m.%Y %H:%M"), real_begin.tzinfo.tzname(None), unicode(t.location.name), unicode(t.name))
         for week in calendar.monthcalendar(year, month):
             buff.append(u'\n<tr>')
diff --git a/TracRendezVous/tracrendezvous/event/templates/alarm_edit.html b/TracRendezVous/tracrendezvous/event/templates/alarm_edit.html
index 0e63e2b..447dea7 100644
--- a/TracRendezVous/tracrendezvous/event/templates/alarm_edit.html
+++ b/TracRendezVous/tracrendezvous/event/templates/alarm_edit.html
@@ -25,7 +25,7 @@
                 <input py:if="event.e_id != 0" type="hidden" name="event_id" value="${event.e_id}"/>
                 <fieldset id="properties">
                 <legend>${event.e_id and 'Edit Event' or 'Add Event'}</legend>
-                <table class="event-wizard" py:with="mydt = selected_tz.fromutc(event.time_begin);dt2 = selected_tz.fromutc(event.time_end)">
+                <table class="event-wizard" py:with="mydt = event.time_begin.astimezone(selected_tz);dt2 = event.time_end.astimezone(selected_tz)">
                     <tr><th><label for="name">Title:</label></th><td><input id="name" type="text" size="60" maxlength="200" name="name" value="${event.name}"/></td></tr>
                     <tr><th><label for="time_begin">Date begin:</label></th><td><input id="date_begin" type="text" size="10" maxlength="10" name="date_begin" value="${mydt.strftime('%d.%m.%Y')}"/>
                             <input id="time_begin" type="text" size="5" maxlength="5" name="time_begin" value="${mydt.strftime('%H:%M')}"/> ${mydt.tzinfo.tzname(None)}</td>
diff --git a/TracRendezVous/tracrendezvous/event/templates/event_details.html b/TracRendezVous/tracrendezvous/event/templates/event_details.html
index 81459a9..057e337 100644
--- a/TracRendezVous/tracrendezvous/event/templates/event_details.html
+++ b/TracRendezVous/tracrendezvous/event/templates/event_details.html
@@ -19,7 +19,7 @@
             <tfoot><tr><th py:for="h in headers">&nbsp;</th></tr></tfoot>
             <tbody>
             <tr py:for="ix,row in enumerate(table)" class="upcoming">
-                <td class="daytext">${selected_tz.fromutc(row[0]).strftime(format)}</td>
+                <td class="daytext">${selected_tz.localize(row[0]).strftime(format)}</td>
                 <py:for each="eventlist in row[1:]">
                 <td py:if="eventlist != False" class="${isinstance(eventlist, list) and 'upcoming-event' or 'upcoming'}" rowspan="${eventlist.rowspan and eventlist.rowspan or None}">
                 <py:if test="eventlist != True">
diff --git a/TracRendezVous/tracrendezvous/event/templates/event_display.html b/TracRendezVous/tracrendezvous/event/templates/event_display.html
index 433965b..526da3b 100644
--- a/TracRendezVous/tracrendezvous/event/templates/event_display.html
+++ b/TracRendezVous/tracrendezvous/event/templates/event_display.html
@@ -3,7 +3,7 @@
       xmlns:xi="http://www.w3.org/2001/XInclude">
 <py:def function="render_event(event, with_day=False)">
 <h2>${event.name}<span py:if="'EVENTS_MODIFY' in perm" class="edit"><a style="color:#f00;" href="${href.event('edit', event.e_id)}">edit</a></span></h2>
-<table py:with="dt = selected_tz.fromutc(event.time_begin);dt2 = selected_tz.fromutc(event.time_end)">
+<table py:with="dt = event.time_begin.astimezone(selected_tz);dt2 = event.time_end.astimezone(selected_tz)">
   <tr>
       <td >${with_day and dt.strftime('%Y.%m.%d')} ${dt.strftime('%H:%M')} - ${with_day and dt2.strftime('%Y.%m.%d')} ${dt2.strftime('%H:%M')}</td>
 <!--       <td >${dt.strftime('%H:%M')} ${dt.tzinfo.tzname(None)} - ${dt2.strftime('%H:%M')} ${dt2.tzinfo.tzname(None)}</td> -->
diff --git a/TracRendezVous/tracrendezvous/event/templates/event_edit.html b/TracRendezVous/tracrendezvous/event/templates/event_edit.html
index 00bb04b..71682ac 100644
--- a/TracRendezVous/tracrendezvous/event/templates/event_edit.html
+++ b/TracRendezVous/tracrendezvous/event/templates/event_edit.html
@@ -25,7 +25,7 @@
                 <input py:if="event.e_id != 0" type="hidden" name="event_id" value="${event.e_id}"/>
                 <fieldset id="properties">
                 <legend>${event.e_id and 'Edit Event' or 'Add Event'}</legend>
-                <table class="event-wizard" py:with="mydt = selected_tz.fromutc(event.time_begin);dt2 = selected_tz.fromutc(event.time_end)">
+                <table class="event-wizard" py:with="mydt = event.time_begin.astimezone(selected_tz);dt2 = event.time_end.astimezone(selected_tz)">
                     <tr><th><label for="name">Title:</label></th><td><input id="name" type="text" size="60" maxlength="200" name="name" value="${event.name}"/></td></tr>
                     <tr><th><label for="time_begin">Date begin:</label></th><td><input id="date_begin" type="text" size="10" maxlength="10" name="date_begin" value="${mydt.strftime('%d.%m.%Y')}"/>
                             <input id="time_begin" type="text" size="5" maxlength="5" name="time_begin" value="${mydt.strftime('%H:%M')}"/> ${mydt.tzinfo.tzname(None)}</td>
diff --git a/TracRendezVous/tracrendezvous/event/templates/event_list.html b/TracRendezVous/tracrendezvous/event/templates/event_list.html
index 2dbbecf..7db8793 100644
--- a/TracRendezVous/tracrendezvous/event/templates/event_list.html
+++ b/TracRendezVous/tracrendezvous/event/templates/event_list.html
@@ -16,7 +16,7 @@
                 <div py:for="ix,event in enumerate(events)"
                     id="event:${event.e_id}" class="event-item">
                <py:choose test=""><div py:when="event.periodic() or event.initial_e_id==True" class="recurring">C<br/>I<br/>R<br/>C<br/>U<br/>L<br/>A<br/>R</div>
-                <div py:otherwise="" class="unique">S<br/>I<br/>N<br/>G<br/>U<br/>L<br/>A<br/>R</div>
+                <div py:otherwise="" class="unique">E<br/>I<br/>N<br/>Z<br/>E<br/>L<br/>T<br/>E<br/>R<br/>M<br/>I<br/>N</div>
                 </py:choose>
                 <div class="event-intern">
                 ${render_event(event, True)}
diff --git a/TracRendezVous/tracrendezvous/event/templates/recur_edit.html b/TracRendezVous/tracrendezvous/event/templates/recur_edit.html
index f227c7e..5b4f57e 100644
--- a/TracRendezVous/tracrendezvous/event/templates/recur_edit.html
+++ b/TracRendezVous/tracrendezvous/event/templates/recur_edit.html
@@ -51,8 +51,8 @@
   <body>
     <div id="content">
       <h1>Recurrency Options for event '${event.name}'</h1>
-      <h2 py:with="dt = selected_tz.fromutc(event.time_begin);
-                    dt2 = selected_tz.fromutc(event.time_end)">${dt.strftime("%A, %d.%m.%Y %H:%M")} ${dt.tzinfo.tzname(None)} - ${dt2.strftime("%A, %d.%m.%Y %H:%M")} ${dt2.tzinfo.tzname(None)}</h2>
+      <h2 py:with="dt = event.time_begin.astimezone(selected_tz);
+                    dt2 = event.time_end.astimezone(selected_tz)">${dt.strftime("%A, %d.%m.%Y %H:%M")} ${dt.tzinfo.tzname(None)} - ${dt2.strftime("%A, %d.%m.%Y %H:%M")} ${dt2.tzinfo.tzname(None)}</h2>
       <form name="recurrence" id='recurrence' uri="" method="post" mime-type="text/plain" action="">
       <fieldset>
       <div class="mybuttons">
diff --git a/TracRendezVous/tracrendezvous/event/web_ui.py b/TracRendezVous/tracrendezvous/event/web_ui.py
index be918de..f11bc64 100644
--- a/TracRendezVous/tracrendezvous/event/web_ui.py
+++ b/TracRendezVous/tracrendezvous/event/web_ui.py
@@ -32,7 +32,7 @@ from tractags.api import TagSystem, ITagProvider
 from tracrendezvous.location.model import ItemLocation
 from tracrendezvous.event.model import Event, EventRRule, EventRDate
 #from tracrendezvous.event.parse_ical import parse_ical
-from ctdotools.utils import gen_wiki_page, validate_id, time_parse, datetime_parse, date_parse, get_tz, local_to_utc
+from ctdotools.utils import gen_wiki_page, validate_id, time_parse, datetime_parse, date_parse, get_tz
 
 from trac.util.translation import domain_functions
 
@@ -602,7 +602,7 @@ class EventModule(Component):
             del req.session["deleted"]
             req.session.save()
         myenv = self.env
-        date_now = datetime.now(utc)
+        date_now = utc.localize(datetime.utcnow())
         session_tzname, selected_tz = get_tz(req.session.get('tz', self.config.get("trac", "default_timezone") or None))
 
         if req.args.has_key("e_id"):
@@ -617,10 +617,10 @@ class EventModule(Component):
                 pi = req.path_info
                 crap, new_date = pi.split("new/", 1)
                 year, month, day = re.match("(\d{4})-(\d{1,2})-(\d{1,2})", new_date).groups()
-                new_date = datetime(int(year), int(month), int(day), 17, tzinfo=utc)
+                new_date = utc.localize(datetime(int(year), int(month), int(day), 17, tzinfo=selected_tz))
             except ValueError:
                 new_date = date_now
-            event = Event(myenv, 0, "", req.authname, date_now, date_now, new_date, new_date + timedelta(0,10800), 1)
+            event = Event(myenv, 0, "", req.authname, date_now, date_now, new_date, selected_tz.normalize(new_date + timedelta(0, 10800)), 1)
             add_ctxtnav(req, _('Events Overview'), req.href.event())
             add_ctxtnav(req, _('Upcoming Events'), req.href.event("upcoming"))
 
@@ -645,12 +645,14 @@ class EventModule(Component):
             try:
                 event.old_time_begin = event.time_begin
                 event.time_begin = datetime_parse("%s %s" % (req.args["date_begin"], req.args["time_begin"]), selected_tz)
+                print "time_begin", event.time_begin, req.args["time_begin"]
             except Exception:
                 add_warning(req, _("Wrong format in 'Date begin'."))
                 is_valid = False
             try:
                 event.old_time_end = event.time_end
                 event.time_end = datetime_parse("%s %s" % (req.args["date_end"], req.args["time_end"]), selected_tz)
+                print "time_end", event.time_end, req.args["time_end"]
             except Exception, e:
                 add_warning(req, _("Wrong format in 'Date end'."))
                 is_valid = False
@@ -699,11 +701,20 @@ class EventModule(Component):
                         add_warning(req, str(e))
                         raise
                     else:
-                        event.time_modified = datetime.now(utc)
+                        event.time_modified = utc.localize(datetime.utcnow())
                         event.update()
                         req.session["edited"] = True
                         req.session.save()
                     req.redirect(req.href.event("edit", event.e_id))
+
+        print
+        print "selected_tz", type(selected_tz)
+        print "session_tzname", type(session_tzname)
+        print "vars", selected_tz.__dict__
+        print "vars", vars(event.time_begin.tzinfo)
+        print "time_begin", event.time_begin.astimezone(selected_tz)
+        print "time_end", event.time_end.astimezone(selected_tz)
+
         return "event_edit.html", {"event" : event,
             "session_tzname" : session_tzname,
             "selected_tz" : selected_tz,
@@ -987,8 +998,8 @@ class EventModule(Component):
                             "FROM events WHERE e_id=%s", (num,))
             session_tzname, selected_tz = get_tz(formatter.req.session.get("tz", self.env.config.get("trac", "default_timezone") or None))
             for name, time_begin, time_end in cursor:
-                time_begin = selected_tz.fromutc(datetime.fromtimestamp(time_begin, utc))
-                time_end = selected_tz.fromutc(datetime.fromtimestamp(time_end, utc))
+                time_begin = utc.localize(datetime.fromtimestamp(time_begin, utc)).astimezone(selected_tz)
+                time_end = utc.localize(datetime.datetime.fromtimestamp(time_end, utc)).astimezone(selected_tz)
                 title = "%s (%s - %s %s)" % (name,
                     time_begin.strftime('%d.%m.%Y %H:%M'),
                     time_end.strftime('%d.%m.%Y %H:%M'), time_begin.tzinfo.tzname(None))
diff --git a/TracRendezVous/tracrendezvous/rendezvous/templates/date.html b/TracRendezVous/tracrendezvous/rendezvous/templates/date.html
index e947da9..d142033 100644
--- a/TracRendezVous/tracrendezvous/rendezvous/templates/date.html
+++ b/TracRendezVous/tracrendezvous/rendezvous/templates/date.html
@@ -36,8 +36,8 @@
                             </tr>
                         </thead>
                         <py:for each="date in dates">
-                        <tr py:with="dt = selected_tz.fromutc(date.time_begin);
-                            dt2 = selected_tz.fromutc(date.time_end)">
+                        <tr py:with="dt = date.time_begin.astimezone(selected_tz);
+                            dt2 = date.time_end.astimezone(selected_tz)">
                             <td>${date.author}</td>
                             <td><input type="text" size="25" name="email:${date.date_id}" value="${date.email}"/></td>
                             <td><input type="text" size="10" maxlength="10" name="date_begin:${date.date_id}" value="${date.time_begin.strftime('%d.%m.%Y')}"/></td>
@@ -59,8 +59,8 @@
                     <input type="hidden" name="rendezvous_id" value="$rendezvous.rendezvous_id"/>
                     <fieldset id="properties">
                     <legend>New Date</legend>
-                    <table class="rendezvous-wizard" py:with="dt = selected_tz.fromutc(new_date.time_begin);
-                            dt2 = selected_tz.fromutc(new_date.time_end)">
+                    <table class="rendezvous-wizard" py:with="dt = new_date.time_begin.astimezone(selected_tz);
+                            dt2 = new_date.time_end.astimezone(selected_tz)">
                         <tr><th><label for="nd_email">Email:</label></th><td><input id="nd_email" type="text" size="24" maxlength="25" name="email"/></td></tr>
                         <tr><th><label for="nd_date_begin">Date begin:</label></th><td><input id="nd_date_begin" type="text" size="10" maxlength="10" name="date_begin" value="${new_date.time_begin.strftime('%d.%m.%Y')}"/>
                                 <input id="nd_time_begin" type="text" size="5" maxlength="5" name="time_begin" value="${dt.strftime('%H:%M')}"/> ${dt.tzinfo.tzname(None)}</td></tr>
diff --git a/TracRendezVous/tracrendezvous/rendezvous/templates/rendezvous.html b/TracRendezVous/tracrendezvous/rendezvous/templates/rendezvous.html
index 831c6dc..7f708ed 100644
--- a/TracRendezVous/tracrendezvous/rendezvous/templates/rendezvous.html
+++ b/TracRendezVous/tracrendezvous/rendezvous/templates/rendezvous.html
@@ -49,7 +49,7 @@
                     <thead>
                         <tr class="rendezvous-matrix"><th class="rendezvous-matrix">Date proposals -></th>
                             <py:for each="date in rendezvous.dates">
-                                <th class="rendezvous-matrix" py:with="dt_begin = selected_tz.fromutc(date.time_begin); dt_end = selected_tz.fromutc(date.time_end)">
+                                <th class="rendezvous-matrix" py:with="dt_begin = date.time_begin.astimezone(selected_tz); dt_end = date.time_end.astimezone(selected_tz)">
                                     <div py:if="date.elected" class="scheduled"><img src="${href.chrome('/hw/images/selected.png')}"/>scheduled</div>
                                     <a py:strip="('RENDEZVOUS_DATE_VIEW' not in perm and date.author != authname) or 'RENDEZVOUS_ADMIN' not in perm" href="${href.date(rendezvous.rendezvous_id)}">${dt_begin.strftime('%d.%m.%Y %H:%M')} ${dt_begin.tzinfo.tzname(None)} - ${dt_end.strftime('%d.%m.%Y %H:%M')} ${dt_end.tzinfo.tzname(None)}</a>
                                 </th>
diff --git a/TracRendezVous/tracrendezvous/rendezvous/templates/rendezvous_edit.html b/TracRendezVous/tracrendezvous/rendezvous/templates/rendezvous_edit.html
index 9e36bb2..8b219c9 100644
--- a/TracRendezVous/tracrendezvous/rendezvous/templates/rendezvous_edit.html
+++ b/TracRendezVous/tracrendezvous/rendezvous/templates/rendezvous_edit.html
@@ -34,7 +34,7 @@
                     <input py:if="rendezvous.rendezvous_id != 0" type="hidden" name="rendezvous_id" value="${rendezvous.rendezvous_id}"/>
                     <fieldset id="properties">
                     <legend>${title}</legend>
-                    <table class="rendezvous-wizard" py:with="dt = selected_tz.fromutc(rendezvous.schedule_deadline)">
+                    <table class="rendezvous-wizard" py:with="dt = rendezvous.schedule_deadline.astimezone(selected_tz)">
                         <tr><th><label for="name">Title</label></th><td><input id="name" type="text" size="50" maxlength="50" name="name" value="${rendezvous.name}"/></td></tr>
                         <tr><th><label for="author">Author</label></th><td>
                             <py:choose test="">
diff --git a/TracRendezVous/tracrendezvous/rendezvous/templates/vote.html b/TracRendezVous/tracrendezvous/rendezvous/templates/vote.html
index 0cd25b6..5f5e4ec 100644
--- a/TracRendezVous/tracrendezvous/rendezvous/templates/vote.html
+++ b/TracRendezVous/tracrendezvous/rendezvous/templates/vote.html
@@ -38,7 +38,7 @@
                                 </tr>
                             </thead>
                             <tbody py:choose="">
-                                <tr py:when="canModify and canDelete" py:for="vote in votes" py:with="dt = selected_tz.fromutc(vote.time_begin);dt2 = selected_tz.fromutc(vote.time_end)">
+                                <tr py:when="canModify and canDelete" py:for="vote in votes" py:with="dt = vote.time_begin.astimezone(selected_tz);dt2 = vote.time_end.astimezone(selected_tz)">
                                     <td>${vote.user}</td>
                                     <td><input type="text" size="40" name="email:${vote.vote_id}" value="${vote.email}"/></td>
                                     <td><input type="text" size="8" id="time_begin:${vote.vote_id}" name="date_begin:${vote.vote_id}" value="${dt.strftime('%d.%m.%Y')}" />
@@ -47,7 +47,7 @@
                                         <input type="text" size="5" name="time_end:${vote.vote_id}" value="${dt2.strftime('%H:%M')}"/> ${dt2.tzinfo.tzname(None)}</td>
                                     <td><input type="checkbox" name="delete" value="${vote.vote_id}" /></td>
                                 </tr>
-                                <tr py:when="not canModify and canDelete" py:for="vote in votes" py:with="dt = selected_tz.fromutc(vote.time_begin);dt2 = selected_tz.fromutc(vote.time_end)">
+                                <tr py:when="not canModify and canDelete" py:for="vote in votes" py:with="dt = vote.time_begin.astimezone(selected_tz);dt2 = vote.time_end.astimezone(selected_tz)">
                                     <td>${vote.user}</td>
                                     <td>${vote.mail}</td>
                                     <td>${dt.strftime('%d.%m.%Y')}
@@ -56,7 +56,7 @@
                                         ${dt2.strftime('%H:%M')} ${dt2.tzinfo.tzname(None)}</td>
                                     <td><input type="checkbox" name="delete" value="${vote.vote_id}"/></td>
                                 </tr>
-                                <tr py:when="canModify and not canDelete" py:for="vote in votes" py:with="dt = selected_tz.fromutc(vote.time_begin);dt2 = selected_tz.fromutc(vote.time_end)">
+                                <tr py:when="canModify and not canDelete" py:for="vote in votes" py:with="dt = vote.time_begin.astimezone(selected_tz);dt2 = vote.time_end.astimezone(selected_tz)">
                                     <td><input type="text" size="40" name="email:${vote.vote_id}" value="${vote.email}" /></td>
                                     <td><input type="text" size="8" id="time_begin:${vote.vote_id}" name="date_begin:${vote.vote_id}" value="${dt.strftime('%d.%m.%Y')}" />
                                         <input type="text" size="5" name="time_begin:${vote.vote_id}" value="${dt.strftime('%H:%M')}"/> ${dt.tzinfo.tzname(None)}</td>
@@ -91,12 +91,12 @@
                                 <th><label for="dv_email">Email:</label></th>
                                 <td><input id="dv_email" type="text" name="email" /></td>
                             </tr>
-                            <tr class="field" py:with="dt = selected_tz.fromutc(rdate.time_begin)">
+                            <tr class="field" py:with="dt = rdate.time_begin.astimezone(selected_tz)">
                                 <th><label for="dv_date_begin">Date Begin:</label></th>
                                 <td><input id="rdate_begin" type="text" name="date_begin" value="${dt.strftime('%d.%m.%Y')}"/>
                                     <input type="text" name="time_begin" value="${dt.strftime('%H:%M')}"/> ${dt.tzinfo.tzname(None)}</td>
                             </tr>
-                            <tr class="field" py:with="dt = selected_tz.fromutc(rdate.time_end)">
+                            <tr class="field" py:with="dt = rdate.time_end.astimezone(selected_tz)">
                                 <th><label for="dv_date_end">Date End:</label></th>
                                 <td><input id="rdate_end" type="text" name="date_end" value="${dt.strftime('%d.%m.%Y')}"/>
                                     <input type="text" name="time_end" value="${dt.strftime('%H:%M')}"/> ${dt.tzinfo.tzname(None)}</td>
diff --git a/TracRendezVous/tracrendezvous/rendezvous/web_ui.py b/TracRendezVous/tracrendezvous/rendezvous/web_ui.py
index 63b46f6..d4cc357 100644
--- a/TracRendezVous/tracrendezvous/rendezvous/web_ui.py
+++ b/TracRendezVous/tracrendezvous/rendezvous/web_ui.py
@@ -364,7 +364,7 @@ class RendezVousModule(Component):
                         if RendezVousDate.exists(self.env, dates[date_id].time_begin, dates[date_id].time_end):
                             raise TracError("RendezVousDate already exists")
                         d.update()
-                        real_tz = selected_tz.fromutc(d.time_begin).tzinfo
+                        real_tz = selected_tz.normalize(selected_tz.astimezone(d.time_begin)).tzinfo
                         update_votes_graph("", d.votes, path, [sizex, sizey], real_tz)
                     except Exception, err:
                         add_warning(req, str(err))