diff --git a/src/date-utils.ts b/src/date-utils.ts
index 25e9363..ffcd098 100644
--- a/src/date-utils.ts
+++ b/src/date-utils.ts
@@ -21,6 +21,10 @@ export function firstOfWeekdayAfterDate(weekday: Weekday, refDate: Date) {
 
 export function fixedDate(date: Date) {
     const d = new Date(date);
+    d.setMilliseconds(0);
+    d.setSeconds(0);
+    d.setMinutes(0);
+    d.setHours(0);
     d.setMinutes(-d.getTimezoneOffset());
     return d;
 }
diff --git a/tests/swedish-holidays.test.ts b/tests/swedish-holidays.test.ts
index cb41762..456a0bb 100644
--- a/tests/swedish-holidays.test.ts
+++ b/tests/swedish-holidays.test.ts
@@ -19,10 +19,15 @@ test('Should throw an error if year is out of range', () => {
 });
 
 test('isPublicHoliday should be true for sundays', () => {
-    const saturdayIsNotPublicHoliday = isPublicHoliday(new Date('2021-11-13'));
-    const sundayIsPublicHoliday = isPublicHoliday(new Date('2021-11-14'));
-    const mondayIsNotPublicHoliday = isPublicHoliday(new Date('2021-11-15'));
+    const saturdayIsNotPublicHoliday = isPublicHoliday(new Date('2021-11-13T01:23:45.678Z'));
+    const sundayIsPublicHoliday = isPublicHoliday(new Date('2021-11-14T01:23:45.678Z'));
+    const mondayIsNotPublicHoliday = isPublicHoliday(new Date('2021-11-15T01:23:45.678Z'));
     assert.strictEqual(saturdayIsNotPublicHoliday, false);
     assert.strictEqual(sundayIsPublicHoliday, true);
     assert.strictEqual(mondayIsNotPublicHoliday, false);
 });
+
+test('isPublicHoliday should be true for christmas day', () => {
+    const christmas = isPublicHoliday(new Date('2021-12-25T01:23:45.678Z'));
+    assert.strictEqual(christmas, true);
+});