On January 2, 2021 at 5:50 a.m. Greenwich Time, the Earth will be at Perihelion, or nearest to the Sun. At that time Earth is about 147.1 million kilometers from the Sun or 91.4 million miles. At Aphelion, which will occur on July 5, 2021 at 3:27 p.m., Earth will be 152.1 million kilometers or 94.5 million miles, a difference of about 5 million kilometers.