The longest day was not passive astronomical event requiring mere observation but active moment demanding ritual participation. Summer solstice—when sun reached maximum northern height, when daylight stretched to limit before inevitable decline toward winter darkness—was Kupolės, the festival of fire and light celebrating solar goddess Saule’s peak power while acknowledging her coming descent. This was not abstract theological commemoration but practical acknowledgment of agricultural reality: the solstice marked transition from growth to ripening, from planting phase to waiting period, from expansion to consolidation. The rituals performed at Kupolės were interventions maintaining proper relationship between human labor and celestial governance determining whether crops succeeded or failed.