diff --git a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
index 6a23ea170d..4ad8139274 100644
--- a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
+++ b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
@@ -135,6 +135,7 @@ namespace JS {
     P(getPrototypeOf)                        \
     P(getSeconds)                            \
     P(getTime)                               \
+    P(getTimezoneOffset)                     \
     P(getUTCDate)                            \
     P(getUTCDay)                             \
     P(getUTCFullYear)                        \
diff --git a/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp b/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
index 4091fc7353..75d7771a7c 100644
--- a/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
@@ -54,6 +54,7 @@ void DatePrototype::initialize(GlobalObject& global_object)
     define_native_function(vm.names.getSeconds, get_seconds, 0, attr);
     define_native_function(vm.names.setSeconds, set_seconds, 2, attr);
     define_native_function(vm.names.getTime, get_time, 0, attr);
+    define_native_function(vm.names.getTimezoneOffset, get_timezone_offset, 0, attr);
     define_native_function(vm.names.getUTCDate, get_utc_date, 0, attr);
     define_native_function(vm.names.getUTCDay, get_utc_day, 0, attr);
     define_native_function(vm.names.getUTCFullYear, get_utc_full_year, 0, attr);
@@ -445,6 +446,19 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_time)
     return Value(this_object->time());
 }
 
+JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_timezone_offset)
+{
+    auto* this_object = typed_this(vm, global_object);
+    if (!this_object)
+        return {};
+
+    if (this_object->is_invalid())
+        return js_nan();
+
+    // FIXME: Make this actually do something once we support timezones instead of just UTC
+    return Value(0);
+}
+
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_date)
 {
     auto* this_object = typed_this(vm, global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/DatePrototype.h b/Userland/Libraries/LibJS/Runtime/DatePrototype.h
index 2ded6d79ad..a4241ce1a6 100644
--- a/Userland/Libraries/LibJS/Runtime/DatePrototype.h
+++ b/Userland/Libraries/LibJS/Runtime/DatePrototype.h
@@ -35,6 +35,7 @@ private:
     JS_DECLARE_NATIVE_FUNCTION(get_seconds);
     JS_DECLARE_NATIVE_FUNCTION(set_seconds);
     JS_DECLARE_NATIVE_FUNCTION(get_time);
+    JS_DECLARE_NATIVE_FUNCTION(get_timezone_offset);
     JS_DECLARE_NATIVE_FUNCTION(get_utc_date);
     JS_DECLARE_NATIVE_FUNCTION(get_utc_day);
     JS_DECLARE_NATIVE_FUNCTION(get_utc_full_year);