A night is the period of time between sunset and sunrise when the sun is below the horizon. During this time, the sky darkens, and temperatures often drop. The appearance of the moon and stars becomes prominent, providing natural light in the absence of the sun. Nights are essential for various natural processes, including the behavior of many animals. Some creatures, like owls and bats, are nocturnal, meaning they are active during the night. Additionally, nights can influence human activities, such as sleep patterns and social events, often leading to a different atmosphere compared to daytime.