Balloon flights can only take place within three hours after sunrise or three hours before sunset. Therefore, the flight time varies each month but is always either early in the morning or late in the afternoon. This is due to the vertical movement of air known as thermals. Thermals occur when the ground heats up and warm air rises from heated surfaces. This phenomenon can be dangerous for balloons, so to avoid it, we schedule flights only when the ground hasn’t yet heated up or when the sun is no longer warming it intensely.
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