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  1. Wikipedia is a free online encyclopedia website in 336 languages of the world. 324 languages are currently active and 13 are closed. People can freely use it, share it, and change it, without having to pay. It is also one of the biggest wiki organizations. People can choose to give money to the Wikimedia Foundation to fund Wikipedia and its ...

  2. The General Data Protection Regulation (GDPR) (Regulation (European Union) 2016/679) was adopted on 27 April 2016. It took effect on 25 May 2018. The regulation is approved by the European Parliament, the Council of the European Union and the European Commission. It protects people's personal data throughout the European Union (EU).

  3. Greenwich Mean Time. Greenwich Mean Time (GMT) is an internationally standardized time format. It is the main time zone in several countries, including the United Kingdom, the Republic of Ireland and Portugal. GMT has the same time as UTC, but there are differences between the two. [1] Technically, GMT is a time zone, while UTC is a time standard.

  4. Metric time. Metric time is a way of measuring how long a period of time is using the metric system. The metric system uses the second as a main unit of time. There are periods of time that are based on the second but shorter. They are named with metric prefixes. Some of these are kiloseconds and milliseconds.