Communication Management Professional (CMP) Exam 2025 – 400 Free Practice Questions to Pass the Exam

The correct answer is Zulu Time. This term is derived from the military’s use of the phonetic alphabet, where "Z" is pronounced "Zulu." Zulu Time refers to Coordinated Universal Time (UTC), which is the time standard that serves as the basis for civil timekeeping worldwide. As Greenwich Mean Time (GMT) was used historically to define time based on the Royal Observatory in Greenwich, London, it was eventually aligned with UTC. Hence, the usage of Zulu Time signifies the same reference point in time regardless of local time zones.

While Standard Time is a term that refers to various time zones within regions, it does not specifically denote the universal reference point that GMT or Zulu Time does. Aviation Time is typically associated with scheduling and operations in aviation and may use Zulu Time but is not a direct synonym for GMT. UTC is indeed technically equivalent to GMT, but in this context, the most common and recognized alternative term is Zulu Time, especially in military and aviation contexts.