Writers are well aware of the importance of setting and time periods for their stories. Culture, climate and world events can add tension and drama to the simplest of stories. The subtext adds depth.
Energies are different throughout the year. Winter blahs can't compete to summer frolics. Spring is bursting with life, Autumn fades into winter. There is a reason we discuss life in terms of seasons. No matter how Goth some people look, they don't have the weight of life experience someone in their winter years carries on their stooped shoulders and lined faces.
There are other rhythms within the seasons; days, nights, weeks, weekends. They all give off different energies which can further be defined by the season of your life. There's so much going on in every moment that the context of time is interesting to me.
If you're a plant-based life form Summer Solstice holds great significance for you. You're at the height of your growing season, and power. If this is a novel about identity, Summer Solstice can be either a good beginning or fitting climax. Use the energy surrounding the longest day of the year to heighten the character's drama or increase the plot's tension.
Bracken is in the summer of his life. But he's failed to reach his full potential. While I'm easily influenced by the season outside my windows, it's important to nail down exactly what rhythms have the most influence on him. Regardless, he's a plant-based life form and the sun's strength is crucial to his growth. How would he survive without it?