section_path: Parts/Daytime
section_name: Daytime
paragraph_text: Daytime
  
  Daytime is the part of the day during which sunlight directly reaches the ground, assuming that there are no obstacles. The length of daytime averages slightly more than half of the 24-hour day. Two effects make daytime on average longer than night. The Sun is not a point but has an apparent size of about 32 minutes of arc. Additionally, the atmosphere refracts sunlight in such a way that some of it reaches the ground even when the Sun is below the horizon by about 34 minutes of arc. So the first light reaches the ground when the centre of the Sun is still below the horizon by about 50 minutes of arc. Thus, daytime is on average around 7 minutes longer than 12 hours.
  
  Daytime is further divided into morning, afternoon, and evening. Morning occurs between sunrise and noon. Afternoon occurs between noon and sunset, or between noon and the start of evening. This period of time sees human's highest body temperature, an increase of traffic collisions, and a decrease of productivity. Evening begins around 5 or 6 pm, or when the sun sets, and ends when one goes to bed.