diff --git a/tests/resources/xbom.csv b/tests/resources/xbom.csv
index 187e35d6..25b4339d 100644
--- a/tests/resources/xbom.csv
+++ b/tests/resources/xbom.csv
@@ -5401,7 +5401,6 @@
 2018-10-15 00:00:00+00:00,2018-10-15 03:46:00,2018-10-15 10:00:00
 2018-10-16 00:00:00+00:00,2018-10-16 03:46:00,2018-10-16 10:00:00
 2018-10-17 00:00:00+00:00,2018-10-17 03:46:00,2018-10-17 10:00:00
-2018-10-18 00:00:00+00:00,2018-10-18 03:46:00,2018-10-18 10:00:00
 2018-10-19 00:00:00+00:00,2018-10-19 03:46:00,2018-10-19 10:00:00
 2018-10-22 00:00:00+00:00,2018-10-22 03:46:00,2018-10-22 10:00:00
 2018-10-23 00:00:00+00:00,2018-10-23 03:46:00,2018-10-23 10:00:00
@@ -5425,7 +5424,6 @@
 2018-11-20 00:00:00+00:00,2018-11-20 03:46:00,2018-11-20 10:00:00
 2018-11-21 00:00:00+00:00,2018-11-21 03:46:00,2018-11-21 10:00:00
 2018-11-22 00:00:00+00:00,2018-11-22 03:46:00,2018-11-22 10:00:00
-2018-11-23 00:00:00+00:00,2018-11-23 03:46:00,2018-11-23 10:00:00
 2018-11-26 00:00:00+00:00,2018-11-26 03:46:00,2018-11-26 10:00:00
 2018-11-27 00:00:00+00:00,2018-11-27 03:46:00,2018-11-27 10:00:00
 2018-11-28 00:00:00+00:00,2018-11-28 03:46:00,2018-11-28 10:00:00
@@ -5507,7 +5505,6 @@
 2019-03-18 00:00:00+00:00,2019-03-18 03:46:00,2019-03-18 10:00:00
 2019-03-19 00:00:00+00:00,2019-03-19 03:46:00,2019-03-19 10:00:00
 2019-03-20 00:00:00+00:00,2019-03-20 03:46:00,2019-03-20 10:00:00
-2019-03-21 00:00:00+00:00,2019-03-21 03:46:00,2019-03-21 10:00:00
 2019-03-22 00:00:00+00:00,2019-03-22 03:46:00,2019-03-22 10:00:00
 2019-03-25 00:00:00+00:00,2019-03-25 03:46:00,2019-03-25 10:00:00
 2019-03-26 00:00:00+00:00,2019-03-26 03:46:00,2019-03-26 10:00:00
@@ -5625,7 +5622,6 @@
 2019-09-05 00:00:00+00:00,2019-09-05 03:46:00,2019-09-05 10:00:00
 2019-09-06 00:00:00+00:00,2019-09-06 03:46:00,2019-09-06 10:00:00
 2019-09-09 00:00:00+00:00,2019-09-09 03:46:00,2019-09-09 10:00:00
-2019-09-10 00:00:00+00:00,2019-09-10 03:46:00,2019-09-10 10:00:00
 2019-09-11 00:00:00+00:00,2019-09-11 03:46:00,2019-09-11 10:00:00
 2019-09-12 00:00:00+00:00,2019-09-12 03:46:00,2019-09-12 10:00:00
 2019-09-13 00:00:00+00:00,2019-09-13 03:46:00,2019-09-13 10:00:00
@@ -5668,7 +5664,6 @@
 2019-11-07 00:00:00+00:00,2019-11-07 03:46:00,2019-11-07 10:00:00
 2019-11-08 00:00:00+00:00,2019-11-08 03:46:00,2019-11-08 10:00:00
 2019-11-11 00:00:00+00:00,2019-11-11 03:46:00,2019-11-11 10:00:00
-2019-11-12 00:00:00+00:00,2019-11-12 03:46:00,2019-11-12 10:00:00
 2019-11-13 00:00:00+00:00,2019-11-13 03:46:00,2019-11-13 10:00:00
 2019-11-14 00:00:00+00:00,2019-11-14 03:46:00,2019-11-14 10:00:00
 2019-11-15 00:00:00+00:00,2019-11-15 03:46:00,2019-11-15 10:00:00
diff --git a/trading_calendars/exchange_calendar_xbom.py b/trading_calendars/exchange_calendar_xbom.py
index 289863b7..e70bd209 100644
--- a/trading_calendars/exchange_calendar_xbom.py
+++ b/trading_calendars/exchange_calendar_xbom.py
@@ -289,19 +289,24 @@
     '2018-09-13',
     '2018-09-20',
     '2018-10-02',
+    '2018-10-18',
     '2018-11-07',
     '2018-11-08',
+    '2018-11-23',
     '2018-12-25',
     '2019-01-26',
     '2019-02-14',
     '2019-03-02',
+    '2019-03-21',
     '2019-04-19',
     '2019-05-01',
     '2019-06-05',
     '2019-08-15',
     '2019-09-02',
+    '2019-09-10',
     '2019-10-02',
     '2019-10-28',
+    '2019-11-12',
     '2019-12-25',
     '2020-02-21',
     '2020-03-09',