diff --git a/exchange_calendars/exchange_calendar_xsau.py b/exchange_calendars/exchange_calendar_xsau.py
index 9df30eab..00625201 100644
--- a/exchange_calendars/exchange_calendar_xsau.py
+++ b/exchange_calendars/exchange_calendar_xsau.py
@@ -4,6 +4,7 @@
 
 import pandas as pd
 from pandas.tseries.holiday import Holiday
+import numpy as np  # for concatenate
 
 from exchange_calendars.exchange_calendar import ExchangeCalendar, HolidayCalendar
 
@@ -11,58 +12,22 @@
 
 NationalDayOfSaudiArabia = Holiday("National Day of Saudi Arabia", month=9, day=23)
 
-EidAlAdhaHoliday = pd.to_datetime(
+# https://www.saudiexchange.sa/wps/portal/saudiexchange/about-saudi-exchange/exchange-media-centre/saudi-exchange-holiday-calendar?locale=en
+EidAlAdhaHoliday = pd.to_datetime(np.concatenate(
     [
-        "2023-06-27",
-        "2023-06-28",
-        "2023-06-29",
-        "2023-06-30",
-        "2023-07-01",
-        "2023-07-02",
-        "2022-07-07",
-        "2022-07-08",
-        "2022-07-09",
-        "2022-07-10",
-        "2022-07-11",
-        "2022-07-12",
-        "2022-07-13",
-        "2021-07-16",
-        "2021-07-17",
-        "2021-07-18",
-        "2021-07-19",
-        "2021-07-20",
-        "2021-07-21",
-        "2021-07-22",
-    ]
-)
-
-EidAlFiterHoliday = pd.to_datetime(
+        pd.date_range('2024-06-13', '2024-06-23'),
+        pd.date_range('2023-06-27', '2023-07-02'),
+        pd.date_range('2022-07-07', '2022-07-13'),
+        pd.date_range('2021-07-16', '2021-07-22')
+    ]))
+
+EidAlFiterHoliday = pd.to_datetime(np.concatenate(
     [
-        "2023-04-18",
-        "2023-04-19",
-        "2023-04-20",
-        "2023-04-21",
-        "2023-04-22",
-        "2023-04-23",
-        "2023-04-24",
-        "2023-04-25",
-        "2022-04-28",
-        "2022-04-29",
-        "2022-04-30",
-        "2022-05-01",
-        "2022-05-02",
-        "2022-05-03",
-        "2022-05-04",
-        "2022-05-05",
-        "2022-05-06",
-        "2022-05-07",
-        "2022-05-08",
-        "2021-05-13",
-        "2021-05-14",
-        "2021-05-15",
-        "2021-05-16",
-    ]
-)
+        pd.date_range('2024-04-05', '2024-04-15'),
+        pd.date_range('2023-04-18', '2023-04-25'),
+        pd.date_range('2022-04-28', '2022-05-08'),
+        pd.date_range('2021-05-13', '2021-05-16')
+    ]))
 
 
 class XSAUExchangeCalendar(ExchangeCalendar):
@@ -92,7 +57,7 @@ def _bound_min_error_msg(self, start: pd.Timestamp) -> str:
 
     @classmethod
     def bound_max(cls) -> pd.Timestamp:
-        return pd.Timestamp("2023-12-31")
+        return pd.Timestamp("2024-12-31")
 
     def _bound_max_error_msg(self, end: pd.Timestamp) -> str:
         msg = super()._bound_min_error_msg(end)