Summer starts when the Earth is at its most tilted towards the Sun, when our axis is pointed the furthest towards the South.
After this point, the axis begins its 6 month movement back towards North, until the Winter Solstice.
The actual date can and does vary.
This has nothing to do with anything but the Earth's tilt and its movement.
Summer starts when the Earth is at its most tilted towards the Sun, when our axis is pointed the furthest towards the South.
After this point, the axis begins its 6 month movement back towards North, until the Winter Solstice.
The actual date can and does vary.
This has nothing to do with anything but the Earth's tilt and its movement.