diff --git a/lib/report_plugins/glucosedistribution.js b/lib/report_plugins/glucosedistribution.js
index f97bd034765..21d5213e9c9 100644
--- a/lib/report_plugins/glucosedistribution.js
+++ b/lib/report_plugins/glucosedistribution.js
@@ -19,9 +19,9 @@ glucosedistribution.html = function html (client) {
   var ret =
     '<h2>' +
     translate('Glucose distribution') +
-    '  (' +
-    '  <span id="glucosedistribution-days"></span>' +
-    '  )' +
+    ' (' +
+    '<span id="glucosedistribution-days"></span>' +
+    ')' +
     '  </h2>' +
     '<table><tr>' +
     '<td rowspan="2" style="valign:middle;"><div id="glucosedistribution-overviewchart"></div></td>' +
@@ -122,7 +122,11 @@ glucosedistribution.report = function report_glucosedistribution (datastorage, s
   var data = datastorage.allstatsrecords;
   var days = datastorage.alldays;
 
-  $('#glucosedistribution-days').text(days + ' ' + translate('days total'));
+  var reportPlugins = Nightscout.report_plugins;
+  var firstDay = reportPlugins.utils.localeDate(sorteddaystoshow[sorteddaystoshow.length - 1]);
+  var lastDay = reportPlugins.utils.localeDate(sorteddaystoshow[0]);
+
+  $('#glucosedistribution-days').text(days + ' ' + translate('days total') + ', ' + firstDay + ' - ' + lastDay);
 
   for (var i = 0; i < 24; i++) {
     $('#glucosedistribution-' + i).unbind('click').click(onClick);
diff --git a/lib/report_plugins/percentile.js b/lib/report_plugins/percentile.js
index 803860d5e47..9694fd51faf 100644
--- a/lib/report_plugins/percentile.js
+++ b/lib/report_plugins/percentile.js
@@ -15,11 +15,17 @@ module.exports = init;
 percentile.html = function html(client) {
   var translate = client.translate;
   var ret =
-      '<h2>' + translate('Glucose Percentile report') + '</h2>'
-    + '<div style="height:500px;">'
-    + '  <div class="chart" id="percentile-chart"></div>'
-    + '</div>'
-    ;
+  '<h2>'
+  + translate('Glucose Percentile report')
+  + ' ('
+  + '<span id="percentile-days"></span>'
+  + ')'
+  + '</h2>'
+  + '<div style="height:500px;">'
+  + '  <div class="chart" id="percentile-chart"></div>'
+  + '</div>'
+  ;
+
   return ret;
 };
 
@@ -36,16 +42,23 @@ percentile.report = function report_percentile(datastorage, sorteddaystoshow, op
   var translate = client.translate;
   var ss = require('simple-statistics');
 
-  var minutewindow = 30; //minute-window should be a divisor of 60 
-  
+  var minutewindow = 30; //minute-window should be a divisor of 60
+
   var data = datastorage.allstatsrecords;
-  
+
   var bins = [];
   var filterFunc = function withinWindow(record) {
     var recdate = new Date(record.displayTime);
     return recdate.getHours() === hour && recdate.getMinutes() >= minute && recdate.getMinutes() < minute + minutewindow;
   };
-  
+
+  var reportPlugins = Nightscout.report_plugins;
+  var firstDay = reportPlugins.utils.localeDate(sorteddaystoshow[sorteddaystoshow.length - 1]);
+  var lastDay = reportPlugins.utils.localeDate(sorteddaystoshow[0]);
+  var countDays = sorteddaystoshow.length;
+
+  $('#percentile-days').text(countDays + ' ' + translate('days total') + ', ' + firstDay + ' - ' + lastDay);
+
   for (var hour = 0; hour < 24; hour++) {
     for (var minute = 0; minute < 60; minute = minute + minutewindow) {
       var date = new Date();