For anyone interested in time travel, you might want to venture to Howard and 2nd Streets this Sunday. From noon to 8 the 18th annual How Weird Street Fair will fill 11 stages with electronic music in another of many efforts around town to relive the 1967 Summer of Love with light shows fashion shows, an aerial circus, and cannabis related exhibits. Tie-dye costumes encouraged. Sponsored by World Peace Through Technology. $20.