UTC Clock



UTC stands for Coordinated Universal Time. This is the primary time standard in the world, and the standard after which the entire world regulates its time. Your clock is regulated by the Coordinated Universal Time standard. UTC is not a time zone, even though people use it as one. Again, UTC is a time standard. What is UTC Time in ISO-8601 Format? Current time: 08:10:17 UTC.UTC is replaced with Z that is the zero UTC offset. UTC time in ISO-8601 is 08:10:17 Z.Note that the Z letter without a space. UTC Time in 12-hour clock time (AM/PM) 08:10:17:AM.

  1. Utc Time
  2. Utc Clock With Seconds

Universal Time Coordinated

Offset: UTC is 0 hours ahead Greenwich Mean Time (GMT) and is used in Universal

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but is used by the scientific community.
UTC is the time standard commonly used across the world since 1972. It is used in many technical fields, like aviation industry and meteorologists, also used to synchronize time across internet networks.

UTC representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates zero hour and zero minutes time differences of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Universal Time Coordinated
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

How do I calculate local time when I see a broadcast time in UTC?

To obtain your local time, you will either need to subtract or add a certain number of hours from UTC depending on how many time zones you are away from Greenwich, England. This map (PDF courtesy of the USNO) shows the standard difference from UTC time to local time for various cities around the word. It has a key to help you find your local time. Additionally, you may try this online time calculator.

UTC Clock

If your country uses Daylight Savings Time (DST), you will have to adjust for it if you are trying to figure out local time for a particular broadcast. Daylight Savings Time does not affect UTC; UTC refers to time on the zero or Greenwich meridian, which is not adjusted to reflect changes either to or from Daylight Saving Time.

So, how can I found out what Universal Time is right now?

It's easy! There are several ways:

1.) Here's the easy answer to this question if you're currently hooked up to the internet. UTC is currently: 'Universal Time from the USNO'

2.) Listen to a major broadcaster like the BBC World Service, Voice Of America or Radio Australia. Typically, major international broadcasters will announce UTC at the top of the hour, then again periodically during their shows.


NIST Radio Station WWVH antenna field in Barking Sands, Kauai. Mozilla for mac 5. This station broadcasts atomic timecode information to Hawaii and the Pacific Ocean.

3.) Tune to one of the standard time stations. A list of those stations can be found here. You'll also usually have luck tuning to 5,000, 10,000, 15,000 or 20,000kHz. In North America, WWV in Fort Collins, Colarado, uses these frequencies and is usually easy to hear even on very inexpensive radios. Since I live in North America, I keep the WWV stations programmed into the memory slots on my portable shortwave radio. As a rule of thumb, you'll hear WWV better on 5,000 and 10,000 kHz in the evening, and on 10,000, 15,000 and 20,000kHz better during the daytime hours.

4.) Today, it is easier than ever to get an inexpensive clock that automatically adjusts itself to one of the world's atomic clocks. In fact, they are even available as travel clocks and watches.

Utc Time

If your radio supports it, you should consider setting your radio clock to UTC. Otherwise, consider keeping a regular wall or alarm clock set to UTC near your radio.

Utc Clock With Seconds

So, now that you've nailed down Universal Time (UTC), you need to learn how to find stations and broadcasts that interest you. Continue..