Transits of Venus are among the rarest of predictable astronomical phenomena. They occur in a pattern that repeats every 243 years, with pairs of transits eight years apart separated by long gaps of 121.5 years and 105.5 years.
The transit will begin today, June 5th, at 2300 CEST and will last until June 6th 0715 CEST. Don’t miss the celestial opportunity as the transit will not occur again for another 105 years (next in 2117 and then 2125). The transit will be covered online via webcast around the globe, for northern-Europe see here (or find world-wide event locations at NASA).