Summer solstice arrives on Friday, June 20, at 10:42 p.m. EDT, marking the first day of summer in the Northern Hemisphere. But what exactly is the summer solstice?

Learn about the longest day of the year and how it affects our daily lives. Find out what to expect and how to make the most of it.

Friday will be the longest day of the year for the Northern Hemisphere, essentially kicking off the summer season.

When most people refer to the first day of summer, they mean astronomical summer—the summer solstice. In contrast, ...

Holland America Line’s Westerdam marked a significant milestone on June 20 as it crossed into the Arctic Circle during its special 28-night Alaska Arctic Circle Solstice cruise.  Departing from ...

The summer solstice occurs this year on Friday, June 20, at 10:42 P.M. EDT. After the June solstice, ... For locations situated north of the Arctic Circle, ...

The summer solstice begins on Friday, June 20. ... "This phenomenon is most noticeable at the Arctic Circle where the Sun hugs the horizon for a continuous 24 hours, ...

According to the astronomical calendar, June 20 marks the summer solstice in the Northern Hemisphere, and the longest day of the year arrives at exactly 10:42 p.m. ET, according to the Almanac.

Friday is the official start of summer and the shortest "day" of the year for the northern hemisphere. At 10:42 p.m. on June 20, the summer solstice will occur.

Today will be the longest day of the year for the Northern Hemisphere, essentially kicking off the summer season.

The summer solstice is today. Here's what to expect on the 1st day of summer. Some areas north of the Arctic Circle are expected to experience sunlight for 24 hours.