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What is morning civil twilight defined as?

  1. 30 minutes before sunrise

  2. 1 hour before sunrise

  3. 30 minutes after sunrise

  4. 1 hour after sunset

The correct answer is: 30 minutes before sunrise

Morning civil twilight refers to the period when the sun is just below the horizon, and there is enough natural light for most outdoor activities. It is defined as starting 30 minutes before sunrise. During this time, pilots can operate a drone under visual flight rules (VFR), as visibility conditions are generally adequate for flying. The light conditions during this twilight phase allow for good visibility, which is crucial for safe drone operation. In contrast, the other options describe different time frames related to sunrise or sunset that do not align with the generally accepted definition of morning civil twilight.