What is the name of the day earth receives 24 hours of daylight?

Any point on Earth rotates to face the Sun once each day. However, because of Earth's 23 degree axial tilt, in their respective summer months, those points north of the Arctic circle or south of the Antarctic circle will have the Sun visible in the sky for 24 hours a day. Conversely, in their winters these locations will be in the dark for 24 hours a day the sun will never rise. There is not a particular day when this happens.