The tilt of the Earth's axis remains constant at 23.5 degrees throughout the year, including between December and June.

It's important to note that the Earth's tilt is the reason we have seasons, not the distance from the sun.

Here's why:

* December Solstice: The Northern Hemisphere is tilted furthest away from the sun, resulting in the shortest day of the year and the longest night.

* June Solstice: The Northern Hemisphere is tilted furthest towards the sun, resulting in the longest day of the year and the shortest night.

While the Earth's position relative to the sun changes throughout the year, its axial tilt stays the same.