diff --git a/web/static/js/swapp.js b/web/static/js/swapp.js
index 2ecc0a9..d125fe7 100644
--- a/web/static/js/swapp.js
+++ b/web/static/js/swapp.js
@@ -183,7 +183,7 @@
         return d3.csv(url, function(csv){
           var timeFormat, data;
           console.debug("Requested CSV for " + target_slug + "…", csv);
-          timeFormat = d3.timeParse('%Y-%m-%dT%H:%M:%S%Z');
+          timeFormat = d3.utcParse('%Y-%m-%dT%H:%M:%S%Z');
           data = {
             'hee': []
           };
@@ -497,16 +497,16 @@
         bottom: 30,
         left: 80
       };
-      this.xScale = d3.scaleTime().domain(this.xDataExtent);
+      this.xScale = d3.scaleUtc().domain(this.xDataExtent);
       this.yScale = d3.scaleLinear().domain(this.yDataExtent);
-      formatMillisecond = d3.timeFormat(".%L");
-      formatSecond = d3.timeFormat(":%S");
-      formatMinute = d3.timeFormat("%H:%M");
-      formatHour = d3.timeFormat("%H:%M");
-      formatDay = d3.timeFormat("%a %d");
-      formatWeek = d3.timeFormat("%b %d");
-      formatMonth = d3.timeFormat("%B");
-      formatYear = d3.timeFormat("%Y");
+      formatMillisecond = d3.utcFormat(".%L");
+      formatSecond = d3.utcFormat(":%S");
+      formatMinute = d3.utcFormat("%H:%M");
+      formatHour = d3.utcFormat("%H:%M");
+      formatDay = d3.utcFormat("%a %d");
+      formatWeek = d3.utcFormat("%b %d");
+      formatMonth = d3.utcFormat("%B");
+      formatYear = d3.utcFormat("%Y");
       multiFormat = function(date){
         if (date > d3.timeSecond(date)) {
           return formatMillisecond(date);
@@ -721,7 +721,7 @@
     TimeSeries.prototype.bisectDate = d3.bisector(function(d){
       return d.x;
     }).left;
-    TimeSeries.prototype.timeFormat = d3.timeFormat("%Y-%m-%d %H:%M");
+    TimeSeries.prototype.timeFormat = d3.utcFormat("%Y-%m-%d %H:%M");
     TimeSeries.prototype.moveCursor = function(x0){
       var i, d0, d1, d, xx, yy, mirrored, dx, transform;
       i = this.bisectDate(this.data, x0, 1);
diff --git a/web/static/js/swapp.ls b/web/static/js/swapp.ls
index f0c7071..aa173c1 100644
--- a/web/static/js/swapp.ls
+++ b/web/static/js/swapp.ls
@@ -159,7 +159,7 @@ https://gitlab.irap.omp.eu/CDPP/SPACEWEATHERONLINE
       url = sw.buildDataUrlForTarget(target_slug, started_at, stopped_at)
       d3.csv(url, (csv) ->
         console.debug("Requested CSV for #{target_slug}…", csv)
-        timeFormat = d3.timeParse('%Y-%m-%dT%H:%M:%S%Z')
+        timeFormat = d3.utcParse('%Y-%m-%dT%H:%M:%S%Z')
         data = { 'hee': [] }
         configuration['parameters'].forEach((parameter) ->
           data[parameter['id']] = []
@@ -384,19 +384,19 @@ export class TimeSeries
       left: 80
     }
 
-    @xScale = d3.scaleTime().domain(@xDataExtent)
+    @xScale = d3.scaleUtc().domain(@xDataExtent)
     @yScale = d3.scaleLinear().domain(@yDataExtent)
     # Domain on a log scale MUST NOT cross zero
 #    @yScale = d3.scaleLog().domain(@yDataExtent)
 
-    formatMillisecond = d3.timeFormat(".%L")
-    formatSecond = d3.timeFormat(":%S")
-    formatMinute = d3.timeFormat("%H:%M")
-    formatHour = d3.timeFormat("%H:%M")
-    formatDay = d3.timeFormat("%a %d")
-    formatWeek = d3.timeFormat("%b %d")
-    formatMonth = d3.timeFormat("%B")
-    formatYear = d3.timeFormat("%Y")
+    formatMillisecond = d3.utcFormat(".%L")
+    formatSecond = d3.utcFormat(":%S")
+    formatMinute = d3.utcFormat("%H:%M")
+    formatHour = d3.utcFormat("%H:%M")
+    formatDay = d3.utcFormat("%a %d")
+    formatWeek = d3.utcFormat("%b %d")
+    formatMonth = d3.utcFormat("%B")
+    formatYear = d3.utcFormat("%Y")
 
     multiFormat = (date) ->
       if date > d3.timeSecond(date) then return formatMillisecond(date)
@@ -645,7 +645,7 @@ export class TimeSeries
     @focus.style("display", "none")
 
   bisectDate: d3.bisector((d) -> d.x).left  # /!\ complex
-  timeFormat: d3.timeFormat("%Y-%m-%d %H:%M")
+  timeFormat: d3.utcFormat("%Y-%m-%d %H:%M")
 
   moveCursor: (x0) ->
     i = @bisectDate(@data, x0, 1)
--
libgit2 0.21.2