St. Patrick's Day is this week and Brooklyn businesses are counting down the days.

In Sunset Park, the owner of Irish Haven has already begun prepping for the festive holiday on Thursday.

"This is our biggest day of the year without a doubt," says Irish Haven owner Michael Collins

The Irish Haven normally has about 20 kegs of beer available per week, but they say for St. Patrick's Day they will have more than triple that amount.

Park Slope and Bay Ridge will have their own parades on Sunday.

The Bay Ridge parade starts at 1 p.m. on Marine Avenue and will end at 67th Street. The Park Slope parade is also at 1 p.m. on Sunday. It will start at 15th Street and Prospect Park West, will loop around on Garfield Place and end where it began.