Today, Tuesday June 21st is the summer solstice and the longest day of the year in the Northern Hemisphere.

The origin of the word solstice comes from a combination of Latin words meaning sun and to stand still. During this day, the sun will shine in the sky longer than any other day.

Also referred to as Midsummer, the event marks the time of the year when Earth is closest to the Sun's axis. Every year, the occasion is marked by festivals, gatherings and rituals in the Northern Hemisphere. Down under, the Southern Hemisphere celebrates the winter solstice, or the shortest day of the year.

Today's solstice started at 7:28 a.m. EDT (11:28 UTC), and at 1:16 p.m. EDT, the sun will be the highest it ever gets in the sky. People all over the Northern Hemisphere are taking advantage of the extra daylight with plenty of festivals, parties and traditions.

Here's a look at some of the unique celebrations around the world: