Day tickets are now on sale for Sonisphere Festival at Knebworth. Sonisphereruns from July 30 to August 1 and headliners are Iron Maiden, Rammstein and Alice Cooper. Tickets for the Friday half-day cost £40 while those for Saturday and Sunday cost £65 each. Full weekend tickets cost £132.50 for the weekend with no booking fee. Full line up so far is as follows:   Friday July 30 Saturn Stage Alice Cooper Europe Turisas Delain Bohemia Stage Terrovision 65daysofstatic Bigelf Black Spiders Fastway Sylosis Jagermeister Stage March of the Raptors Throat Bowtime Bar Stage And So I Watch You From Afar Chickenhawk Deaf Havana Failsafe Red Bull Bedroom Jam Stage Fei…