True, the actual feast of St. Patrick isn’t until Saturday, but when isn’t it a good time to start celebrating? Dig out your greenest outfit, practice saying “Erin go Bragh” properly (and know that it means “Ireland forever,” ’cause you just might be asked), look for that elusive four-leaf clover, prepare a hearty breakfast of bangers and mash and get yourself over to today’s parade, beginning at 2 p.m. at the Washington Monument, Charles and Monument streets, then proceeding south and east on Charles and Pratt streets to Market Place. Bands, bagpipes, dancers, most likely a pol or two — it’ll all be there. To really get in the spirit, claim yourself a prime viewing spot for the Shamrock 5K Race, which sets off at 1:15 p.m. at Charles and Franklin streets. irishparade.net.