https://www.mediawiki.org/wiki/Extension:DateTimeTools/en
Extension:DateTimeTools - MediaWiki
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https://pub.dev/documentation/eggnstone_charts/latest/eggnstone_charts/DateTimeTools-class.html
DateTimeTools class - eggnstone_charts library - Dart API
API docs for the DateTimeTools class from the eggnstone_charts library, for the Dart programming language.
charts libraryclassdartapi