diff --git a/lib/date.js b/lib/date.js
index e166563b..06aaac13 100644
--- a/lib/date.js
+++ b/lib/date.js
@@ -36,8 +36,9 @@ export function getLocalTime(t) {
   return addMinutes(new Date(t), new Date().getTimezoneOffset());
 }
 
-export function getDateRange(value) {
+export function getDateRange(value, locale) {
   const now = new Date();
+  const localeOptions = dateLocales[locale];
 
   const { num, unit } = value.match(/^(?<num>[0-9]+)(?<unit>hour|day|week|month|year)$/).groups;
 
@@ -52,8 +53,8 @@ export function getDateRange(value) {
         };
       case 'week':
         return {
-          startDate: startOfWeek(now),
-          endDate: endOfWeek(now),
+          startDate: startOfWeek(now, { locale: localeOptions }),
+          endDate: endOfWeek(now, { locale: localeOptions }),
           unit: 'day',
           value,
         };