Orangemen in Derry and south Belfast are demonstrating against the re-routing of their parades.
Lodges in the Derry area have marched along RUC lines on the outskirts of the city after they were prevented from entering the city centre.
A group from the main parade marched up to the police blockade and handed in a letter of protest, they say that they will wait there for as long as possible.
Another standoff has developed in south Belfast, where Orangemen are angry by the re-routing of their march to a field outside the city.
The marchers are being prevented from walking along the nationalist Lower Ormeau Road.