Mercury reaches its greatest elongation, 26 degrees east of the sun on July 4. From latitude 40 degrees north, the +0.6-magnitude planet is low in the west-northwest and sets during twilight about 1.5 hours after sunset, and only an hour after the sun on July 12 when the planet will be of magnitude +1.2.

Mercury is notoriously difficult to see from Earth, thanks to its proximity to the Sun. But on July 4, Mercury reaches its greatest eastern elongation, meaning the planet will be at its farthest apparent distance from the Sun in the evening sky. This event marks one of the best chances to see the elusive planet this year.

Observing the night sky can be done with no special equipment, although a sky map can be very useful, and a good telescope or binoculars will enhance some experiences and bring some otherwise invisible objects into view.