Gmt Time Date

UTC (GMT/Zulu)-time: Monday, May 3, 2021 at 06:54:47 UTC is Coordinated Universal Time, GMT is Greenwich Mean Time. Great Britain/United Kingdom is one hour ahead of UTC during summer.

  1. Compare or convert time between different locations and time zones anywhere in the world. Find the best event, online meeting or call time with current GMT/UTC difference (offset). Daylight Saving Time (DST) rules automatically calculated.
  2. GMT Time converter, compare London and Local time. Enter your location or any place, city, location for more comparisons. Find out in more detail why the Prime Meridian at Greenwich is so important for the time zone structure. The United Kingdom is on GMT only during winter months and on British Summer Time (BST) during the summer months.
  3. Converting GMT to Amman Time. This time zone converter lets you visually and very quickly convert GMT to Amman, Jordan time and vice-versa. Simply mouse over the colored hour-tiles and glance at the hours selected by the column. GMT stands for Greenwich Mean Time. Amman, Jordan time is 3 hours ahead of GMT.

One of the key questions developers have in every programming language is the one related to time and timezones. Before we try to answer how you can get the current date and time in UTC or GMT in Java, there are a few concepts you need to understand.

Gmt Time Date

To begin with, GMT (which stands for Greenwich Mean Time) is not the same as UTC (which stands for Coordinated Universal Time):

  • GMT is a time zone used in some but not all parts of the world (mainly Europe and Africa). It uses either a 24-hour format or a 12-hour format for display and its based on astronomical observations.
  • UTC is not a time zone. It is a standard which we can use to display time zones. It is more stable as it takes time from an atomic clock.

If you are using the package to get the current date and time in Java (as it looks more intuitive), you will find out soon it’s very limited. There are several reasons for that:

  • It doesn’t have a time zone.
  • It doesn’t represent a date. It represents an instance in time in milliseconds since the Unix epoch (1970).

Therefore, if you want to get swiftly the current time in milliseconds only, you can use the following code:

Gmt Time Date

Other than that, you can also change the current system TimeZone, and if you wanted to use a different timezone, you could do it like this:

However, if you run this code, you will see the following output:

In general, this is not ideal, as it prints the current time based on the timezone of the specified region, which may be different than GMT, therefore, it should be avoided.

A better and more modern option bundled within the Java Core library (and not using any third-party offerings)is to use the java.time package.

If you look at the documentation page, the package is based on the ISO calendar system and offers a simplified API for displaying and handling date and time instances. Bellow is the depicted table of the capabilities exposed in this package:

Based on this, we can infer that this package represents the time (with the location unspecified), as UTC, or as an offset from UTC.

Indeed, if we check the Instant class to get the current time, we can see the date time printed as UTC:

This will display:

Which is the current date-time in UTC. The ending Z character denotes the Zone Offset which is Zero.

A more robust option is to convert this Instance to a ZonedDateTime as you would like to configure the current TimeZone. You can do that by using the ofInstant static factory method passing a ZoneId:

In most cases you should be using UTC format as they are mostly supported in Java.

How do I set the default locale for my JVM?

First of all, to understand how to set the default locale, you need to know what locale is. Locales identify a specific language and geographic region. They are represented as strings using the following format:

For example, here are some Locale strings:

If you run a UNIX platform (Mac, Linux), there is a convention to set some environmental variables using the LC_* prefix. For example, by running this command in the console, we can see the default system locale is en_IE:

In Java, if we call the Locale.getDefault() in a method and run the java command without any flags, it will not pick up the system Locale as specified in the LC_* variables. For example, given the following main class, located in com/thdespou/


Now, if we change the LC_* variables to en_UK, it will still print en_IE.

In fact, looking at the Locale documentation page, there is no information on how to change that. However, by inspecting the source code of the Locale.class and particularly the static initializer block …

… and looking at the initDefault() method, we get a hint of what we exactly need to do in order to set the default locale in the JVM:

So using the following system properties:

What Time Is It In Gmt

user.language: For setting the current language

user.region: For setting the language region

Given that information, we can check in the command line for setting the default locale and using this guide. For example:

Gmt Time Date

Gmt Time Zone Converter

Note that this is based on this implementation of the JVM, and we should not be if this would change in the future, as it is not clearly documented in the JavaDocs.

Gmt Date Time Now

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Gmt Time Zone

We have more popular questions with detailed answers around localization coming soon. I hope I could help you learn some useful things along the way. Stay put for the next part promptly.