Final answer:
Gate announcements should be made approximately 30 minutes before boarding begins. Check with the specific airline for their policies.
Step-by-step explanation:
Gate announcements should be made approximately 30 minutes before boarding begins.
This allows passengers enough time to make their way to the gate and prepare for boarding.
Making the announcement too early may cause passengers to wait for an extended period of time, leading to congestion and potential delays.
However, it's important to note that the exact timing of gate announcements can vary between airlines, so it's always a good idea to check with the specific airline for their policies.