Sunrise

Sunrise is the daily event in which the sun appears above the horizon and gradually rises in the sky. Sunrise is essential for life on earth, as it signals the start of the day, allowing plants to photosynthesize and absorb energy from the sun. Sunrise also has the power to affect the mood and productivity of humans, as the amount of light and warmth affects the circadian rhythm, helping to wake people up and to stay alert during the day. As such, sunrise can be used to help humans better regulate their wake-up times and overall schedules.