What is the longest day of the year called?

What is the longest day of the year called?
– Winter solstice
– Vernal equinox
– Summer solstice
– Winter equinox

Summer solstice

Answer: The summer solstice is the longest day of the year – the day in which we can enjoy approximately 17 hours of daylight. In the northern hemisphere, the summer solstice takes place between June 20 and 22.. This year, it falls on Thursday June 21. There are two solstices each year – one in the winter and one in the summer. The summer solstice occurs when the when the tilt of Earth’s axis is most inclined towards the sun and is directly above the Tropic of Cancer. The term ‘solstice’ derives from the Latin word ‘solstitium’, meaning ‘sun standing still’.

The summer solstice, also known as midsummer, occurs when a planet’s rotational axis, or geographical pole on either its Northern or its Southern Hemisphere is most greatly inclined toward the star that it orbits. Wikipedia