White nights in Saint Petersburg are one of the most famous nature and culture events of Saint Petersburg. Around June 22 there are almost no darkness the day around. This part of year although sun goes completely under horizon but for only 5 hours and so shallow that whole night can be seen as twilight. Combing with moving bridges starting midnight there is special tourists and for general public attraction there is short boat cruise to observe moving bridges. It can start neat Palace Bridge and goes back and forth to Bid Ochta Bridge.