diff --git a/js/app/date_poll.js b/js/app/date_poll.js
index db90cbdeac0f1b91fdb1588137c4309b68886261..058b6a414b8dcd132678c7987c9c0b1efc8ba3b1 100644
--- a/js/app/date_poll.js
+++ b/js/app/date_poll.js
@@ -151,12 +151,54 @@ $(document).ready(function () {
 
     // Button "Copy hours of the first day"
 
+    function addHour(last_hour, add_button) {
+
+		// for and id
+		var di_hj = last_hour.children('.hours').attr('id').split('-');
+		var di = parseInt(di_hj[0].replace('d', ''));
+		var hj = parseInt(di_hj[1].replace('h', ''));
+
+		// label, title and placeholder
+		var last_hour_label = last_hour.children('.hours').attr('placeholder');
+		var hour_text = last_hour_label.substring(0, last_hour_label.indexOf(' '));
+
+		// RegEx for multiple replace
+		var re_label = new RegExp(last_hour_label, 'g');
+		var re_id = new RegExp('"d' + di + '-h' + hj + '"', 'g');
+
+		// HTML code of the new hour
+		var new_hour_html =
+		    '<div class="col-sm-2">' +
+		    last_hour.html().replace(re_label, hour_text + ' ' + (hj + 2))
+		        .replace(re_id, '"d' + di + '-h' + (hj + 1) + '"')
+		        .replace(/value="(.*?)"/g, 'value=""') +
+		    '</div>';
+
+		// After 11 + button is disabled
+		if (hj < 99) {
+		    last_hour.after(new_hour_html);
+		    $('#d' + di + '-h' + (hj + 1)).focus();
+		    add_button.prev('.remove-an-hour').removeClass('disabled');
+		    if (hj === 98) {
+		        add_button.addClass('disabled');
+		    }
+		}
+    }
+
+
     $('#copyhours').on('click', function () {
         var first_day_hours = $selected_days.find('fieldset:eq(0) .hours').map(function () {
             return $(this).val();
         });
 
         $selected_days.find('fieldset:gt(0)').each(function () {
+
+            while($(this).find('.hours').length < first_day_hours.length){
+                var last_hour = $(this).children('div').children('div:last').prev();
+                var add_button = $(this).find('.add-an-hour');
+                addHour(last_hour, add_button);
+            }
+
             for (var i = 0; i < first_day_hours.length; i++) {
                 $(this).find('.hours:eq(' + i + ')').val(first_day_hours[i]); // fill hours
             }
@@ -167,38 +209,7 @@ $(document).ready(function () {
 
     $(document).on('click', '.add-an-hour', function () {
         var last_hour = $(this).parent('div').parent('div').prev();
-
-        // for and id
-        var di_hj = last_hour.children('.hours').attr('id').split('-');
-        var di = parseInt(di_hj[0].replace('d', ''));
-        var hj = parseInt(di_hj[1].replace('h', ''));
-
-        // label, title and placeholder
-        var last_hour_label = last_hour.children('.hours').attr('placeholder');
-        var hour_text = last_hour_label.substring(0, last_hour_label.indexOf(' '));
-
-        // RegEx for multiple replace
-        var re_label = new RegExp(last_hour_label, 'g');
-        var re_id = new RegExp('"d' + di + '-h' + hj + '"', 'g');
-
-        // HTML code of the new hour
-        var new_hour_html =
-            '<div class="col-sm-2">' +
-            last_hour.html().replace(re_label, hour_text + ' ' + (hj + 2))
-                .replace(re_id, '"d' + di + '-h' + (hj + 1) + '"')
-                .replace(/value="(.*?)"/g, 'value=""') +
-            '</div>';
-
-        // After 11 + button is disable
-        if (hj < 99) {
-            last_hour.after(new_hour_html);
-            $('#d' + di + '-h' + (hj + 1)).focus();
-            $(this).prev('.remove-an-hour').removeClass('disabled');
-            if (hj == 98) {
-                $(this).addClass('disabled');
-            }
-        }
-
+	    addHour(last_hour, $(this));
     });
 
     // Buttons "Remove an hour"
@@ -327,4 +338,4 @@ $(document).ready(function () {
     if ($selected_days.find('fieldset').length > 1) {
         $removeaday_and_copyhours.removeClass('disabled');
     }
-});
\ No newline at end of file
+});