What must be adjusted to the time of day during takeoff/landing at night on the ERJ 175?

Adjusting the galley work lights during takeoff and landing at night on the ERJ 175 is crucial for several reasons. Primarily, the galley work lights must be dimmed or turned off to minimize distractions and to maintain proper night vision for the flight crew. Bright lights can compromise the pilots’ ability to see outside the aircraft and can hinder their visual adaptation to the dark environment, especially during critical phases such as takeoff and landing.

By managing the intensity of the galley work lights, it ensures that the cockpit remains adequately illuminated for the pilots to operate the aircraft efficiently while not overwhelming their visual senses with excessive light. This practice enhances safety by facilitating the pilots' focus on their primary responsibilities and the external environment.

Other elements like cabin lights, flight deck instruments, and galley power do not specifically pertain to the adjustments needed for night operations in the same way as the galley work lights. While cabin lights may also be dimmed, the emphasis in this context is on the galley work lights, as they directly impact the crew's operational efficiency during nighttime takeoffs and landings.