TRANSIT OF MERCURY: On Monday morning, May 9th, Mercury will pass directly between Earth and the sun, producing a rare transit visible from the Americas, Europe, Africa and much of Asia. According to NASA. In the USA, the transit begins around 7:15 am eastern time. This means it begins before sunrise on the west coast, but that’s no problem. The transit lasts for more than 7 hours, so Mercury will still be gliding across the solar disk when the sun comes up over places like California and Alaska. Everyone in the USA can experience the event.