Researchers at Brigham Young University, Utah, USA, have been looking into how the time between sunrise and sunset alters your behaviour.
Results prove that the amount of time the sun is out does genuinely effect everyone's mental state, even more so than other factors like temperature, pollution and rain.
The team at the university, who have published a study
which discovered that people were more unhappy when days were shorter and there was less sunshine.
In contrast, people were more upbeat when daylight was more prolonged as opposed to how many rays were being absorbed.
Results were concluded when examiners studied meteorological data from the university's Physics and Astronomy Weather Station and pollution data from the U.S. Environmental Protection Agency.
Patients mental health at Brigham Young's Counseling and Psychological Services Centre were also compared with the weather.
Excerpt from Indy100