The Start of Summer in the Shahanshahi calendar signifies the transition into the warmer months of the year. This period is typically associated with changes in weather and rising temperatures. In various cultures, the start of summer is recognized as an opportunity for celebration and outdoor activities. This observance holds particular significance in Iran and among Zoroastrians, as it coincides with the seasonal shift and the beginning of agricultural harvests. Today, the Start of Summer is viewed as a symbol of change and renewal in nature.