Earth Clock is a

computer program A computer program is a sequence or set of instructions in a programming language for a computer to execute. Computer programs are one component of software, which also includes documentation and other intangible components. A computer progra ...

that will display a map of the

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surf ...

showing the zones where is

day A day is the time period of a full rotation of the Earth with respect to the Sun. On average, this is 24 hours, 1440 minutes, or 86,400 seconds. In everyday life, the word "day" often refers to a solar day, which is the length between two s ...

and where is

night Night (also described as night time, unconventionally spelled as "nite") is the period of ambient darkness from sunset Sunset, also known as sundown, is the daily disappearance of the Sun below the horizon due to Earth's rotation. As view ...

. It was released by Xentax Foundation on February 7, 2004, and programmed by

Arjan Dikhoff Arjan may refer to: Places * Arjan, East Azerbaijan, a village in Iran * Arjan, Isfahan, a village in Iran * Arjan District, an administrative subdivision of Iran * Arrajan, a medieval city and province near modern-day Behbahan * Arjan Protect ...

. Its source code can be found at

SourceForge SourceForge is a web service that offers software consumers a centralized online location to control and manage open-source software projects and research business software. It provides source code repository hosting, bug tracking, mirrori ...

References

Clocks {{science-software-stub