Here's why:
* Earth's Tilt: The Earth is tilted on its axis. This tilt is the reason we have seasons.
* Summer Solstice: In the Northern Hemisphere, the sun reaches its highest altitude at noon on the Summer Solstice, which typically falls around June 20th or 21st. This is the day with the longest period of daylight.
* Winter Solstice: In the Southern Hemisphere, the sun reaches its highest altitude at noon on the Summer Solstice, which typically falls around December 21st or 22nd.
* Equinoxes: On the Spring Equinox (around March 20th/21st) and the Autumn Equinox (around September 22nd/23rd), the sun is at its highest point at noon for everyone on the equator.
To find the exact date for your location, you can look up the date of the summer solstice in your hemisphere.
