The Cherry Blossom Festival is a strange event with no fixed date. It's not even like a solstice or something related to the lunar calendar, it's when the cherry blossoms decide to fall on a given year. Vancouver's Cherry Blossom Festival is officially designated as March 28 - April 24, at least this year (2009), but on my street, the flowers hadn't fallen even by the last day of April. That said, it's entirely possible that the trees I had my eye on weren't cherry trees at all. My grasp of things botanical is fairly weak as befits the owner of a black thumb of death.