I defined a new calendar (mon-fri setted as working days) including the predefined Public Holiday "St Stephen's Day" (26 of December) .
When I query the Internal BO "Calendars" on Saturday 26 Dec 2015 I obtain Public Holiday FALSE, Working Day FALSE. Even worst when I query it on Monday 28 Dec 2015: I obtain Public Holiday TRUE, Working Day FALSE. The result it that "St Stephen's Day" has been moved to the first available working day!
What I've to do to have 28 Dec 2015 as working day?