Neptune, just 6 deg. Pluto is moving slowly eastward with respect to the stars near the Ophiuchus- Scorpius border. It rises in the late evening. This marks the official beginning of the season of Spring. The seasons are caused by the tilt of the earth's axis of rotation with respect to its orbit around the sun.
Summer occurs when the north pole of the earth is tilted towards the sun.
This causes the sunlight to strike the northern hemisphere more vertically heating the ground very efficiently. In the winter, the north pole is tilted away from the sun. This causes the sunlight to strike the northern hemisphere at a grazing angle which is less efficient at heating the ground. Adding to this effect, during the summer, because the sun passes high in the sky, there are more hours of daylight and fewer hours of darkness. The weather is warm because the ground gains more energy in the daytime than it loses at night.