Jan 3. At approximately 12:43 AM, EST, planet Earth will reach perihelion, that point in its orbit when it is closest to the sun (about 91,400,000 miles). Earth’s mean distance from the sun (mean radius of its orbit) is reached early in the months of April and October. Note that Earth is closest to the sun during the Northern Hemisphere winter. Read more at https://www.timeanddate.com/astronomy/perihelion-aphelion-solstice.html.
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