Did you invest in eclipse glasses to watch the May 20 annular/partial solar eclipse? If so, you are set for the Venus transit on June 5.
Venus passing in front of the sun as seen from Earth is a very rare occurrence and will not happen again until December 2117. The event begins when the spherical shape of the Goddess of Love edges in front of the sun, blocking out a bit of its rays. Through eclipse glasses, you will see a small black dot passing in front of the giant orange orb of the sun. If you don't have eclipse glasses, you can visit a local observatory, buy a solar filter for your telescope, or if it's cloudy you can watch one of the many web sites with a live feed of the event. (One to try is the Keck Observatory.)
In the United States, the transit occurs on June 5, while the Eastern Hemisphere will see the event on June 6. In the U.S., the event occurs near sunset, while in most of Europe, Africa, and western Asia, the event will be in progress at sunrise. Venus’s procession across the sun is slow, taking 6 hours and 40 minutes to traverse the northern half of the sun.
First contact (when Venus appears to touch the limb of the sun, also called ingress) occurs at 22:09:29 UT, which translates to 5:09 p.m. Central Time. Greatest contact will be at 1:29:28 UT, or 8:29 p.m. Central Time, which is about the time of sunset. For observers farther west, in San Francisco for example, the transit begins around 3:09 p.m. Pacific Time, with greatest contact right around 6:30 p.m., and the sun setting at 8:30 before the event completes at about 9:45 p.m.