Earth travels around the Sun along a path called an orbit.

Here is Earth on its orbit on the day of Andre's birthday.

Earth on its orbit on Andre's birthday, seen from far above. Not to scale.

Earth keeps traveling along its orbit, day after day.

After 3 months, Earth has gone a quarter of the way around the Sun.

After 6 months, Earth has gone halfway around, to the far side of the Sun.

After 12 months, Earth has gone all the way around, and it is back at the birthday place.

Earth on the birthday, then 3, 6 and 9 months later. After 12 months it is back at the birthday place.

Since Andre's last birthday, Earth has traveled once around the Sun.