When Is Earth Closest To The Sun 'link' Site

Earth is closest to the Sun every year in early January, typically around January 2nd to 5th. This astronomical event is called perihelion, a term derived from the Greek words peri (near) and helios (Sun).

The moment when the Earth is closest to the Sun is called perihelion. Perihelion occurs when the Earth is at its closest point to the Sun in its elliptical orbit, which happens around early January each year. Specifically, perihelion typically falls on or around January 3rd or 4th. At this time, the Earth is approximately 91.5 million miles (147 million kilometers) away from the Sun. when is earth closest to the sun

This specific orbital milestone is known as perihelion. Here is everything you need to know about when it happens, why it occurs, and how it affects our planet. The Short Answer: Early January Earth is closest to the Sun every year

• NASA: Earth's Orbit
• National Astronomical Observatory: Earth's Distance from the Sun

1. Solar Size: With proper solar filtration (do not look without certified eclipse glasses or a solar filter on a telescope), you could theoretically compare the sun’s apparent size in January vs. July. In January, it is slightly larger. Amateur astronomers sometimes measure this for fun.
2. The Equation of Time: The difference between “clock time” and “sundial time” peaks in early November and mid-February. This is partly due to Earth’s faster orbital speed at perihelion.

6. Observable Effects (Yes, You Can Notice Some)

• Larger Sun: At perihelion, the Sun’s apparent diameter is ~3% larger than at aphelion. You can’t see this with naked eye, but through a solar telescope (with proper filters), it’s measurable.
• Earth moves faster in its orbit from late December to early January. This slightly shortens winter in the north (by a few days compared to summer) because the planet zips through that part of the orbit more quickly.
• Solar intensity difference: ~7% more sunlight hits Earth in January vs July. This doesn’t override the tilt effect for temperature, but it does make southern summers hotter and northern winters slightly less cold than they would be otherwise.

A Quick Look at the Numbers

| Event | Date (approx.) | Distance from Sun | Northern Hemisphere Season | | :--- | :--- | :--- | :--- | | Perihelion (Closest) | January 2-5 | ~91.4 million miles | Winter (Cold) | | Aphelion (Farthest) | July 4-7 | ~94.5 million miles | Summer (Hot) | Solar Size: With proper solar filtration (do not

Earth is closest to the sun in early January every year . This orbital milestone is called perihelion . Upcoming Dates and Times

It also has subtle effects: