The decisions that you make and the actions that you take upon the earth are the means by which you evolve.
If we perceived life with reverence, we would stand in awe at the experience of physical life and walk the earth in a very deep sense of gratitude.
When you become completely loving and kind without fear and without thought of harming others, you graudate from the Earth school. That is when reincarnation ends.
Our experiences of the Solstice depends entirely upon where we are when it occurs. Neither Solstice encompasses everyone. Neither can. The Solstices stand forever opposed, literally at the two poles of our Earth and experiences.