diff --git a/koha-tmpl/intranet-tmpl/prog/en/includes/calendar.inc b/koha-tmpl/intranet-tmpl/prog/en/includes/calendar.inc
index 681e8cc401..1437f2e157 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/includes/calendar.inc
+++ b/koha-tmpl/intranet-tmpl/prog/en/includes/calendar.inc
@@ -43,8 +43,9 @@
     [% Asset.js("lib/maskito/maskito.core.js") | $raw %]
     [% Asset.js("lib/maskito/maskito.kit.js") | $raw %]
     <script>
-        flatpickr.l10ns.default.weekdays = flatpickr_weekdays;
-        flatpickr.l10ns.default.months   = flatpickr_months;
+        flatpickr.l10ns.default.weekdays       = flatpickr_weekdays;
+        flatpickr.l10ns.default.months         = flatpickr_months;
+        flatpickr.l10ns.default.rangeSeparator = flatpickr_rangeSeparator;
         let flatpickr_defaults = {
             allowInput: true,
             dateFormat: "Y-m-d",
diff --git a/koha-tmpl/intranet-tmpl/prog/js/calendar.js b/koha-tmpl/intranet-tmpl/prog/js/calendar.js
index d5af71b562..e1637b2ba7 100644
--- a/koha-tmpl/intranet-tmpl/prog/js/calendar.js
+++ b/koha-tmpl/intranet-tmpl/prog/js/calendar.js
@@ -1,4 +1,4 @@
-/* global debug sentmsg __ dateformat_pref flatpickr_dateformat_string bidi calendarFirstDayOfWeek */
+/* global debug sentmsg __ dateformat_pref flatpickr_dateformat_string bidi calendarFirstDayOfWeek __p */
 /* exported DateTime_from_syspref flatpickr_weekdays flatpickr_months */
 var MSG_PLEASE_ENTER_A_VALID_DATE = __(
     "Please enter a valid date (should match %s)."
@@ -141,6 +141,9 @@ jQuery.validator.addMethod(
     }
 );
 
+var flatpickr_rangeSeparator =
+    " " + __p("As in, from date1 to date2", "to") + " ";
+
 var flatpickr_weekdays = {
     shorthand: [
         __("Sun"),