These time scales are denoted in the form UTC ( NPL ) in the UTC form, where NPL in this case identifies the National Physical Laboratory, UK.

UTC is a discontinuous time scale composed from segments that are linear transformations of atomic time, the discontinuities being arranged so that UTC approximated UT2 until the end of 1971, and UT1 thereafter.

It is instrumental for keeping time, in that UTC is basically the atomic time synchronized to Earth's rotation by means of exact observations.

During a 1935 – 1942 colonization attempt, the island was most likely on Hawaii time, which was then 10. 5 hours behind UTC .< ref > Since it is uninhabited the island's time zone is unspecified, but it lies within a nautical time zone 12 hours behind UTC.

It is used with UTC in the Internet date / time format ( see the external link below ).

Local time is UTC + 06: 00 year-round ( DST is not observed ).

( The SI second as now used for UTC, when adopted, was already a little shorter than the current value of the second of mean solar time.

* Eastern Daylight Time ( UTC − 4 ), a time zone observed in North America

* 2009 – At 23: 31: 30 UTC the Unix system time ( time t ) number reaches 1234567890 seconds.

Many almanacs list full moons not just by date, but by their exact time as well, usually in Coordinated Universal Time ( UTC ).

It is arguably the same as Coordinated Universal Time ( UTC ) and when this is viewed as a time zone the name Greenwich Mean Time is especially used by bodies connected with the United Kingdom, such as the BBC World Service, the Royal Navy, the Met Office and others particularly in Arab countries, such as the Middle East Broadcasting Center and OSN.

Before the introduction of UTC on 1 January 1972 Greenwich Mean Time ( also known as Zulu time ) was the same as Universal Time ( UT ) which is a standard astronomical concept used in many technical fields.

It was successfully launched on 27 April 2008 at 22: 16 UTC ( 4. 16 a. m. Baikonur time ) aboard a Soyuz-FG / Fregat rocket provided by Starsem.

It lies within a nautical time zone which is 12 hours behind UTC.

TT is distinct from the time scale often used as a basis for civil purposes, Coordinated Universal Time ( UTC ).

But Coordinated Universal Time ( UTC ) ( an atomic-based time scale which is always kept within 0. 9 second of UT1 ) is in common actual use in the UK, and the name GMT is often inaccurately used to refer to it.

Coordinated Universal Time ( UTC ) is an atomic time scale designed to approximate Universal Time.

The Balcones Fault zone was most recently active on 9 / 30 / 12 at 04: 09: 03 UTC in Irving, Texas, registering a 3. 4 on the Richter magnitude scale.

There are no time zones in Internet Time ; instead, the new time scale of Biel Mean Time ( BMT ) is used, based on Swatch's headquarters in Biel, Switzerland and equivalent to Central European Time, West Africa Time, and UTC + 1.

The 2002 Dudley earthquake was an earthquake registering 4. 7 on the Richter scale that struck the Midlands of England, on 22 September 2002 23: 53 UTC ( 23 September, 00: 53 local time ) and lasted approximately 20 seconds.

On 24 January 2005 at 04: 10 ( UTC + 8 ), an earthquake with magnitude 6. 2 Richter scale occurred in the city.

By early September 12, Hurricane Linda reached Category 5 status on the Saffir-Simpson scale, and around 0600 UTC, Linda attained estimated peak winds of 185 mph ( 295 km / h ) about 145 mi ( 235 km ) southeast of Socorro Island.

The earthquake happened at 5: 55 local time ( 2: 25 UTC ) and was measured at 6. 4 on the Richter scale.

In communications messages, a date-time group ( DTG ) is a set of characters, usually in a prescribed format, used to express the year, the month, the day of the month, the hour of the day, the minute of the hour, and the time zone, if different from Coordinated Universal Time ( UTC ).

The time and date code information begins 43 seconds before the corresponding minute marker ( second 17 of the previous minute, in the absence of leap seconds ), and is always given in terms of UK civil time, which is UTC in winter and UTC + 1h when Summer Time is in effect.

On March 23, 1965 at 15: 57: 00 UTC, at the end of the first orbit, over Corpus Christi, Texas, a 1 minute 14 second burn of the orbit attitude and maneuvering system ( OAMS ) engines gave a delta-V of 15. 5 meters per second ; which was the first orbital maneuver by any manned spacecraft.

* Between one and sixteen seconds past the minute ( except at the top of the hour ), CHU transmits the difference between UT1 and Coordinated Universal Time ( UTC ) by using split tones.

* For the last 10 seconds of each minute ( seconds 50 to 59 ), the once-per-second tones are again cut to 10 milliseconds each, while CHU transmits a brief voice station identification, followed by voice announcements of the next minute in UTC, alternating between French and English.

However, physical evidence provides a strong indication that First Officer Loew may have survived the inferno only to die in the eventual crash ; instruments show that Loew continued trying to fly the now-crippled aircraft, and gauges later indicated that he shut down engine two approximately one minute before impact, implying he was still alive and at the controls until the aircraft struck the ocean at 22: 31 AT ( 01: 31 UTC ).

At 13: 32 UTC, Niè and Fèi had a seven minute conversation with their wives and children who were in Mission Control.

The crew was on board when the postponement was called at the T-minus 5 minute mark at approximately 7: 51 am EST ( 12: 51 pm UTC ).

After a buoy reported a two minute sustained wind speed of and an eye appeared on satellite imagery, Floyd was upgraded to a hurricane at 1800 UTC on September 9.

Carrying 97 passengers and a crew of seven, the Boeing departed Jakarta's Soekarno-Hatta International Airport's runway 25R at 15: 37 local time ( 08: 37 UTC ) for a planned 80 minute flight to Singapore Changi Airport, with the captain at the controls.

After a 7, 000 feet per minute dive with engines in a flight idle or near flight idle condition, the plane crashed at about 03: 45 local time ( 07: 45 UTC ) into a field on a cattle ranch near Machiques, in the western Zulia State, Venezuela ( about 30 kilometres from the Colombian border ).

Less than a minute later, at 13: 43 UTC ( 20: 43 Jakarta time ), engine two surged and flamed out.

The Lunar Module Orion, with Young and Duke inside, landed north and west of the planned landing site at 104 hours, 29 minutes, and 35 seconds into the mission, at 2: 23: 35 UTC on 21 April.

The first impact occurred at 20: 13 UTC on July 16, 1994, when fragment A of the nucleus entered Jupiter's southern hemisphere at a speed of about 60 km / s.

Over the next 6 days, 21 distinct impacts were observed, with the largest coming on July 18 at 07: 33 UTC when fragment G struck Jupiter.

The date of a particular event depends on the observed UTC offset.

For example the attack on Pearl Harbor that began at 1941-12-07T18: 18Z took place on 7 December according to Hawaii Time ( UTC-10: 30 ), and on 8 December according to Japan Standard Time ( UTC + 09 ).

* Solstice ( called the winter solstice in the Northern Hemisphere and the summer solstice in the Southern Hemisphere ) occurs on dates varying from December 20 to December 22 ( in UTC ).

DS1's ion engines were shut down on 18 December 2001 at approximately 20: 00: 00 UTC, signaling the end of the mission.

The first EVA on the lunar surface was performed by Americans Neil Armstrong and Buzz Aldrin on July 21, 1969 ( UTC ), after the Apollo 11 Moon landing.

He died at 12: 05 pm MDT ( 18: 05 UTC ) on May 28 at the age of 42.

Those countries marked in light blue keep their clocks on UTC / GMT / WET year round.

During this period the island was on Hawaii time, which was then 10. 5 hours behind UTC.

* The solstice called the summer solstice in the northern hemisphere and the winter solstice in the southern hemisphere occurs on dates varying from 20 June to 21 June ( in UTC ).

* 2004 – Spirit, a NASA Mars rover, lands successfully on Mars at 04: 35 UTC.

Christmas Island is in the world's farthest forward time zone, UTC + 14, and Christmas Island is one of the first inhabited places on Earth to experience the New Year each year ( see also Caroline Atoll, Kiribati ).

Odyssey was launched April 7, 2001 on a Delta II rocket from Cape Canaveral Air Force Station, and reached Mars orbit on October 24, 2001, at 2: 30 a. m. UTC ( October 23, 7: 30 p. m. PDT, 10: 30 p. m. EDT ).

* The equinox, named the vernal or spring equinox in the northern hemisphere and the autumnal equinox in the southern hemisphere, occurs on dates varying from March 19 to March 21 ( in UTC )