GMT is the same as which of the following?

• A. Local solar time
• B. UTC+1
• C. Coordinated Universal Time (UTC) or Zulu Time
• D. Pacific Standard Time

Answer: (C)

Understanding time standards used in navigation. GMT is effectively the same as Coordinated Universal Time (UTC) and is what you’ll hear referred to as Zulu time in radio and navigational communications. UTC is the modern standard kept by atomic clocks, with leap seconds added to stay in step with Earth's rotation. In practice, GMT, UTC, and Zulu time are used interchangeably for timetables, plotting, and time stamps.

Local solar time varies with your longitude and isn’t a universal reference. A offset like UTC+1 is simply one hour ahead of UTC, not equal to UTC itself. Pacific Standard Time is a regional time zone (UTC−8, or UTC−7 with daylight saving), also not the same as UTC.