The United States Navy Blue Angels signaled the start of Fleet Week 2017 with their thunderous arrival at the Oakland airport Sunday during civil twilight.
Civil twilight occurs when the Sun is less than 6 degrees below the horizon. In the morning, civil twilight begins when the Sun is 6 degrees below the horizon and ends at sunrise. In the evening, it begins at sunset and ends when the Sun reaches 6 degrees below the horizon.
Students, Staff, and Faculty will be participating in various Fleet Week events during the weekend.
More information about official Fleet Week activities can be found here: https://fleetweeksf.org