During Which Month Is The Earth Closest To The Sun Link -

This specific point in Earth's orbit is called . It typically occurs between January 2nd and January 5th each year. At this time, Earth is about 3 million miles (5 million kilometers) closer to the sun than it is at its farthest point (aphelion) in July.

You can also search for "Earth perihelion date" on NASA's main site or any reputable astronomy education page for confirmation.

The Seasons, the Equinox, and the Solstices - National Weather Service