timezones
Earth's hour bands
Timezones are regions of the Earth that share the same standard time, typically offset from Coordinated Universal Time (UTC) by whole hours.
The world is divided into twenty-four primary zones, though political boundaries create variations: What timezone are you in?
The word appears as one word or two (time zones), with the two-word form more common in formal writing.
Universal time standard
- GMTGlobal time baseline
- synchronizationAligning timing across systems
- world clockMulti-timezone time display
- atomic clocksDevices measuring time via particle vibrations
UTC minus five
Organized group assemblies
- conference callsMulti-participant telephone discussions
- availabilityState of being obtainable
- calendarDate-tracking system
- bookingAdvance arrangement secured
appointments · overlap · business hours · working hours · deadlines · windows · slots · coordination
Built-in sleep-wake cycle
- fatigueWeariness from prolonged exertion
- melatoninCircadian rhythm regulator
- body clockInternal time-keeping system
- disorientationLoss of spatial awareness
adaptation · chronobiology · biological clock · sleep cycle · grogginess · drowsiness · recovery · red-eye flight
UTC
Universal time standard
- GMTGlobal time baseline
- synchronizationAligning timing across systems
- world clockMulti-timezone time display
atomic clocks · daylight saving · prime meridian · chronometry
EST
UTC minus five
meetings
Organized group assemblies
- conference callsMulti-participant telephone discussions
- availabilityState of being obtainable
- calendarDate-tracking system
booking · appointments · overlap · business hours · working hours · deadlines · windows · slots · coordination · remote teams
circadian rhythm
Built-in sleep-wake cycle
- fatigueWeariness from prolonged exertion
- melatoninCircadian rhythm regulator
- body clockInternal time-keeping system
disorientation · adaptation · chronobiology · biological clock · sleep cycle · grogginess · drowsiness · recovery · red-eye flight · eastbound
timezonesUTC
Universal time standard
Greenwich Mean Time · GMT · world time · solar time · absolute time