Last year the Danish government decided to remove a public holiday: Storebede dag

Rule for the day is: 4. Friday after Easter

Ex:

This holiday is still red in SuperOffice One (and I expect all SuperOffice installations), but should not be – since it is no longer a public holiday.

The day still exists as “Storebede dag” (Great prayer Day) but you now have to work – ie it can be kept with the name but the red/day off indicator should be removed

Please:

1. Remove the holiday from the import file for new installations (Onsite and Online)
2. Remove the holiday for online installations
3. Create a import file to remove the day for onsite customers.

To make things difficult it is still a public holliday in Greenland and Faroe Islands ☹

I do not remember if redletterday rely on UI language or the country you are from.