Update: Google says when page is first crawled is one of signals to determine freshness
hope not - scrapers paradise, choose events/news item scrape pages from different sites put it together in a new page. add an updated/created date to the page .... Shame if you have pages on Roman History !
or .. Google scrapes events/concerts etc pages adds little box to top of SERPS giving times/dates/box office numbers/address. does deal with event promoters