This is a list of the UTC time offsets, showing the difference in hours and minutes from Coordinated Universal Time (UTC), from the westernmost (−12:00) to the easternmost (+14:00). It includes countries and regions that observe them during standard time or year-round. 11:00 UTC - eleven o'clock UTC Sunrises & Sunsets Around The World COVID-19 Pandemic Longest Day 2021 Solar Eclipse June 2021 New York City, US Toronto, Canada London, UK North Pole Qaanaaq, Greenland Countdown to 2022 Earth Time Clock. Nearly all international time is kept using Coordinated Universal Time (UTC) and a twenty four hour clock. UTC is also known as GMT, or Greenwich Mean Time. Here is a conversion table to help convert UTC to your own local time zone. The Time Zone Converter converts times instantly as you type. Convert between major world cities, countries and timezones in both directions. May 02, 2021 Universal Time Coordinated / Universal Coordinated Time: Successor to: Greenwich Mean Time (GMT) Military name: “Zulu” Military Time: Longitude: 0° (Prime Meridian) At sea: Longitudes between 7.5° West and 7.5° East: Note: United Kingdom is one hour ahead of UTC / GMT during summer.
The main API for dates, times, instants, and durations.
The classes defined here represent the principle date-time concepts, including instants, durations, dates, times, time-zones and periods. They are based on the ISO calendar system, which is the de facto world calendar following the proleptic Gregorian rules. All the classes are immutable and thread-safe.
Each date time instance is composed of fields that are conveniently made available by the APIs. For lower level access to the fields refer to the
java.time.temporal package. Each class includes support for printing and parsing all manner of dates and times. Refer to the
java.time.format package for customization options.
java.time.chrono package contains the calendar neutral API
Era. This is intended for use by applications that need to use localized calendars. It is recommended that applications use the ISO-8601 date and time classes from this package across system boundaries, such as to the database or across the network. The calendar neutral API should be reserved for interactions with users.
Dates and Times
Instant is essentially a numeric timestamp. The current Instant can be retrieved from a
Clock. This is useful for logging and persistence of a point in time and has in the past been associated with storing the result from
LocalDate stores a date without a time. This stores a date like '2010-12-03' and could be used to store a birthday.
Utc+11 Time Zone Countries
LocalTime stores a time without a date. This stores a time like '11:30' and could be used to store an opening or closing time.
LocalDateTime stores a date and time. This stores a date-time like '2010-12-03T11:30'.
ZonedDateTime stores a date and time with a time-zone. This is useful if you want to perform accurate calculations of dates and times taking into account the
ZoneId, such as 'Europe/Paris'. Where possible, it is recommended to use a simpler class without a time-zone. The widespread use of time-zones tends to add considerable complexity to an application.
Duration and Period
11 Utc Time
Beyond dates and times, the API also allows the storage of periods and durations of time. A
Duration is a simple measure of time along the time-line in nanoseconds. A
Period expresses an amount of time in units meaningful to humans, such as years or days.
Additional value types
Month stores a month on its own. This stores a single month-of-year in isolation, such as 'DECEMBER'.
DayOfWeek stores a day-of-week on its own. This stores a single day-of-week in isolation, such as 'TUESDAY'.
Year stores a year on its own. This stores a single year in isolation, such as '2010'.
YearMonth stores a year and month without a day or time. This stores a year and month, such as '2010-12' and could be used for a credit card expiry.
MonthDay stores a month and day without a year or time. This stores a month and day-of-month, such as '--12-03' and could be used to store an annual event like a birthday without storing the year.
OffsetTime stores a time and offset from UTC without a date. This stores a date like '11:30+01:00'. The
ZoneOffset is of the form '+01:00'.
OffsetDateTime stores a date and time and offset from UTC. This stores a date-time like '2010-12-03T11:30+01:00'. This is sometimes found in XML messages and other forms of persistence, but contains less information than a full time-zone.
Unless otherwise noted, passing a null argument to a constructor or method in any class or interface in this package will cause a
NullPointerException to be thrown. The Javadoc '@param' definition is used to summarise the null-behavior. The '@throws
NullPointerException' is not explicitly documented in each method.
All calculations should check for numeric overflow and throw either an
ArithmeticException or a
Design notes (non normative)
The API has been designed to reject null early and to be clear about this behavior. A key exception is any method that takes an object and returns a boolean, for the purpose of checking or validating, will generally return false for null.
The API is designed to be type-safe where reasonable in the main high-level API. Thus, there are separate classes for the distinct concepts of date, time and date-time, plus variants for offset and time-zone. This can seem like a lot of classes, but most applications can begin with just five date/time types.
Instant- a timestamp
LocalDate- a date without a time, or any reference to an offset or time-zone
LocalTime- a time without a date, or any reference to an offset or time-zone
LocalDateTime- combines date and time, but still without any offset or time-zone
ZonedDateTime- a 'full' date-time with time-zone and resolved offset from UTC/Greenwich
Instant is the closest equivalent class to
ZonedDateTime is the closest equivalent class to
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Where possible, applications should use
LocalDateTime to better model the domain. For example, a birthday should be stored in a code
LocalDate. Bear in mind that any use of a time-zone, such as 'Europe/Paris', adds considerable complexity to a calculation. Many applications can be written only using
Instant, with the time-zone added at the user interface (UI) layer.
The offset-based date-time types
OffsetDateTime, are intended primarily for use with network protocols and database access. For example, most databases cannot automatically store a time-zone like 'Europe/Paris', but they can store an offset like '+02:00'.
Classes are also provided for the most important sub-parts of a date, including
MonthDay. These can be used to model more complex date-time concepts. For example,
YearMonth is useful for representing a credit card expiry.
Note that while there are a large number of classes representing different aspects of dates, there are relatively few dealing with different aspects of time. Following type-safety to its logical conclusion would have resulted in classes for hour-minute, hour-minute-second and hour-minute-second-nanosecond. While logically pure, this was not a practical option as it would have almost tripled the number of classes due to the combinations of date and time. Thus,
LocalTime is used for all precisions of time, with zeroes used to imply lower precision.
Following full type-safety to its ultimate conclusion might also argue for a separate class for each field in date-time, such as a class for HourOfDay and another for DayOfMonth. This approach was tried, but was excessively complicated in the Java language, lacking usability. A similar problem occurs with periods. There is a case for a separate class for each period unit, such as a type for Years and a type for Minutes. However, this yields a lot of classes and a problem of type conversion. Thus, the set of date-time types provided is a compromise between purity and practicality.
11 Utc Time To Central Time
The API has a relatively large surface area in terms of number of methods. This is made manageable through the use of consistent method prefixes.
of- static factory method
parse- static factory method focussed on parsing
get- gets the value of something
is- checks if something is true
with- the immutable equivalent of a setter
plus- adds an amount to an object
minus- subtracts an amount from an object
to- converts this object to another type
at- combines this object with another, such as
Multiple calendar systems is an awkward addition to the design challenges. The first principle is that most users want the standard ISO calendar system. As such, the main classes are ISO-only. The second principle is that most of those that want a non-ISO calendar system want it for user interaction, thus it is a UI localization issue. As such, date and time objects should be held as ISO objects in the data model and persistent storage, only being converted to and from a local calendar for display. The calendar system would be stored separately in the user preferences.
11 Utc Time To Cst
There are, however, some limited use cases where users believe they need to store and use dates in arbitrary calendar systems throughout the application. This is supported by
ChronoLocalDate, however it is vital to read all the associated warnings in the Javadoc of that interface before using it. In summary, applications that require general interoperation between multiple calendar systems typically need to be written in a very different way to those only using the ISO calendar, thus most applications should just use ISO and avoid
The API is also designed for user extensibility, as there are many ways of calculating time. The field and unit API, accessed via
Temporal provide considerable flexibility to applications. In addition, the
TemporalAdjuster interfaces provide day-to-day power, allowing code to read close to business requirements: