Last updated: 2019-09-22

Source: https://support.freshservice.com/support/solutions/articles/50000000643-how-to-set-holidays-and-change-calendar-holidays-to-working-day-

When adding your business hours, you can define the Yearly Holiday List either manually or by importing a country's holiday list by specifying the region. The holidays will be ignored when calculating SLAs for a ticket as they are treated as non-working days. Removing an existing holiday from the list would make Freshservice treat it as a working day.