What is twilight time in relation to flying operations?

Twilight time refers to the period during which there is enough natural light that operations can occur without artificial lighting, making it a crucial concept for flying operations, particularly for unmanned aircraft. The correct definition of twilight time is characterized as the time frame occurring 30 minutes after sunset or 30 minutes before sunrise.

This definition aligns with regulations and operational practices, which indicate that during these periods, pilots may utilize a limited amount of natural light for visual flight, enhancing safety by allowing them to see obstacles and maintain awareness of their surroundings. It's important for pilots to understand this timeframe, as it impacts their ability to conduct flights safely and in compliance with relevant regulations.

In the context of flying operations, the other options do not accurately match the definition of twilight time as defined in aviation regulations, leading to misunderstandings regarding safe flight practices during low-light conditions.