Top cities time with respect to GMT - 66 cities

World standard time or Coordinated Universal Time (UTC) is the basis for civil time today. This 24-hour time standard is kept using highly precise clocks combined with the Earth's rotation. It is the primary time standard by which the world regulates clock and time. UTC is a high precision atomic time standard, which measures time by the nanosecond. UTC has standard seconds as defined by the International Atomic Time.

Here we present a minimalistic pdf of World standard time. Have a print out of it for a quick reference.