When Is Earth Closest To The Sun

Northern Winter / Southern Summer (January / Perihelion) \ Enters Winter (Tilted Away) \ [Earth] <--- 147 Million Km ---> ( SUN ) / / Enters Summer (Tilted Toward)

: Because the planet moves faster in January, it transitions through the winter quadrant of its orbit more rapidly. As a result, winter in the Northern Hemisphere is about five days shorter than summer.

: Distance does not cause seasons; the 23.5-degree axial tilt does.

As a result, winter in the Northern Hemisphere is about five days shorter than summer, as Earth swiftly rounds the bend closest to the Sun. when is earth closest to the sun

Earth reaches its closest point to the sun, or perihelion, in early January each year. In 2026, this moment will occur on . At that precise moment, Earth will be approximately 91.4 million miles (147.1 million kilometers) from the sun.

Instead, they are caused by Earth's . As Earth orbits the Sun, this tilt means that for half the year, the Northern Hemisphere is angled away from the Sun, receiving less direct sunlight and experiencing winter. At the same time, the Southern Hemisphere is tilted toward the Sun, enjoying summer. Six months later, the situation reverses. The 3% variation in distance created by our elliptical orbit has a minor effect on global temperatures compared to the dominant impact of the axial tilt.

Interestingly, because of the elliptical orbit, Earth moves slightly faster when it is closer to the Sun (perihelion) and slower when it is farther away (aphelion), according to Kepler's laws of planetary motion. Northern Winter / Southern Summer (January / Perihelion)

If distance dictated our seasons, the entire planet would experience summer in January and winter in July. Instead, January brings freezing temperatures to the Northern Hemisphere while the Southern Hemisphere enjoys mid-summer.

Earth’s current orbital eccentricity is incredibly low, sitting at approximately 0.01670.0167

It also has subtle effects:

The story of how we get there is one of subtle celestial geometry rather than dramatic seasonal shifts. The Great Ellipse

While perihelion always occurs in early January, the exact date and time shift slightly from year to year. For example, it may fall on January 2nd in one year and January 4th or 5th in another. Two primary factors cause this calendar drift: 1. The Leap Year Cycle

The "stretch" or flatness of this ellipse is measured by a value called . A perfect circle has an eccentricity of As a result, winter in the Northern Hemisphere

During perihelion, Earth receives about 6.9% more solar energy than at its farthest point, aphelion (which occurs around early July). This variation in distance and solar energy has significant implications for our climate, seasons, and the overall functioning of our planet.

Because our orbit is not a perfect circle, the distance between Earth and the Sun changes throughout the year. If We Are Closer, Why Is It Cold?