At what time must a pilot cease operations of a balloon not equipped for night flight if official sunset is at 1730 EST?

To safely operate a balloon that is not equipped for night flight, the regulation indicates that a pilot must cease operations at sunset. If official sunset is at 1730 EST, the pilot is required to conclude all operations before this time.

The best practice is to allow for a short window of transition from daylight to darkness, hence ceasing operations just before the official sunset time. By choosing a time like 1729 EST, the pilot ensures compliance with regulations while providing a safety buffer as the natural light diminishes. This approach reduces the risks associated with the final descent or landing during the transition from day to night, which can happen rapidly.

Therefore, ceasing operations at 1729 EST adheres to safety guidelines for balloon operators while still allowing the pilot to complete their flight while there is adequate light.