Step 2: Select [View] > [Change View] > [List]
Step 3: Search “UM Almanac” and click the [START] column header to sort by the start date
Step 4: Select and remove all duplicated entries
Step 5: Repeat Step 3 and Step 4. In Step 3, please search “UM Holiday”
Step 6: Select [View] > [Change View] > [Calendar] to change back to Calendar view
Step 7: Import the Macao Public Holiday and UM Almanac again.