Provides additional date-time classes that complement those in JDK 8
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Latest commit 3fbb911 Jun 29, 2018


ThreeTen-Extra provides additional date-time classes that complement those in JDK 8.

Not every piece of date/time logic is destined for the JDK. Some concepts are too specialized or too bulky to make it in. This project provides some of those additional classes as a well-tested and reliable jar.


Various documentation is available:


Release 1.3.2 is the current release. This release is considered stable and worthy of the 1.x tag.

ThreeTen-Extra requires Java SE 8 or later and has no dependencies.

Available in the Maven Central repository


Please use GitHub issues and Pull Requests for support.

Release process

  • Update version (,, changes.xml)
  • Commit and push
  • mvn clean release:clean release:prepare release:perform
  • Website will be built and released by Travis