diff --git a/lib/www/client/source/src/views/MapLayersMixin.vue b/lib/www/client/source/src/views/MapLayersMixin.vue
index 5dc4e10..eec7030 100644
--- a/lib/www/client/source/src/views/MapLayersMixin.vue
+++ b/lib/www/client/source/src/views/MapLayersMixin.vue
@@ -305,14 +305,21 @@ export default {
 
             const paths = [];
             let prevTstamp;
-            paths.push({path: [], timestamps: [], num: 0});
+            paths.push({path: [], timestamps: [], num: 0, ts0: +Infinity, ts1: -Infinity});
             for (const el of data) {
               const tstamp = new Date(el.tstamp).valueOf();
               const curPath = () => paths[paths.length-1];
               if (prevTstamp && Math.abs(tstamp - prevTstamp) > breakLimit) {
                 // Start a new path
                 console.log(`Breaking path on interval ${Math.abs(tstamp - prevTstamp)} > ${breakLimit}`);
-                paths.push({path: [], timestamps: [], num: paths.length});
+                paths.push({path: [], timestamps: [], num: paths.length, ts0: +Infinity, ts1: -Infinity});
+              }
+
+              if (tstamp < curPath().ts0) {
+                curPath().ts0 = tstamp;
+              }
+              if (tstamp > curPath().ts1) {
+                curPath().ts1 = tstamp;
               }
 
               curPath().path.push([el.x, el.y]);
@@ -320,6 +327,12 @@ export default {
               prevTstamp = tstamp;
             }
 
+            paths.forEach (path => {
+              path.nums = paths.length;
+              path.ts0 = new Date(path.ts0);
+              path.ts1 = new Date(path.ts1);
+            });
+
             return paths;
         },
         getPath: d => d.path,
diff --git a/lib/www/client/source/src/views/MapTooltipsMixin.vue b/lib/www/client/source/src/views/MapTooltipsMixin.vue
index 970c2f3..85a5a73 100644
--- a/lib/www/client/source/src/views/MapTooltipsMixin.vue
+++ b/lib/www/client/source/src/views/MapTooltipsMixin.vue
@@ -244,10 +244,10 @@ export default {
       console.log("track lines tooltip", p);
 
       if (p) {
-        const ts1 = new Date(p.timestamps[0] * 1000);
-        const ts0 = new Date(p.timestamps[p.timestamps.length-1] * 1000);
 
-        let html = `${ts0.toISOString()}<br/>\n${ts1.toISOString()}<br/>\n`
+        let html = `Segment ${p.num+1} / ${p.nums}<br/>\n`
+          html += `${p.ts0.toISOString()}<br/>\n`
+          html += `${p.ts1.toISOString()}<br/>\n`;
 
         return {html, style: this.tooltipDefaultStyle};
       }