All dates entered in logbook are based on which time?

All dates entered in logbook are based on which time?

• A. Local time
• B. GMT
• C. Zulu time
• D. Pacific

Answer: (C)

Times in a logbook are recorded using Zulu time, which is the aviation term for Coordinated Universal Time (UTC). This universal reference keeps entries consistent no matter where a flight operates, since UTC doesn’t change with time zones or daylight saving time. Local time zones, like Pacific, vary by location and season, and GMT is basically the same universal reference but the aviation standard terminology used in logbooks is Zulu time. Using Zulu time eliminates confusion when calculating durations, converting across regions, or comparing logs from different crews or countries. For example, a departure logged at 2300 Zulu is the same moment worldwide, even if the local time at the airfield would be different.

Times in a logbook are recorded using Zulu time, which is the aviation term for Coordinated Universal Time (UTC). This universal reference keeps entries consistent no matter where a flight operates, since UTC doesn’t change with time zones or daylight saving time. Local time zones, like Pacific, vary by location and season, and GMT is basically the same universal reference but the aviation standard terminology used in logbooks is Zulu time.

Using Zulu time eliminates confusion when calculating durations, converting across regions, or comparing logs from different crews or countries. For example, a departure logged at 2300 Zulu is the same moment worldwide, even if the local time at the airfield would be different.