The Capture Calendar is a digital tool made available by the Publications Office of the European Union, intended to provide an archived history of the selected webpage. In this particular instance, the webpage being archived is a site dedicated to nanotechnology hosted on cordis.europa.eu. The tool dates back to 1996, meticulously logging data spanning more than two decades and up until 2023.

This remarkable technological service is part of the wider Internet Archive project, known as the Wayback Machine. Please note, however, that the Capture Calendar does not record how frequently a site is updated. Instead, it maps the number of instances the site has been recorded or 'captured' over the given timescale. This distinction elucidates the functionality of the tool: while it may not show site activity in real-time, it provides a comprehensive historical snapshot of a website's existence on the World Wide Web.

The Publications Office of the European Union is tasked with the maintenance and serviceability of this tool. They adopt necessary measures to ensure that the archived data remains accessible, providing an invaluable resource for looking back at the development and progress of specific web content. The accessibility is largely dependent on internet browser support for JavaScript, a standard in most modern browsers.

Those seeking more information or with queries regarding the service can directly contact the support team through their given email address: info@archive.org. This enhances the user experience by providing an accessible point of contact for users who might encounter difficulties in using the tool.

To summarize, the Capture Calendar, made available by the Publications Office of the European Union, is a unique tool in the way it offers a comprehensive overview of the lifespan of online content. It might be limiting in the sense that it does not track real-time updates to a site. However, as an archival tool documenting the instances a website is recorded, it provides vital historical data that researchers and others could find beneficial. The fact that it is part of the broader Wayback Machine project reinforces its relevancy and reliability. It offers an essential facet to the dynamic landscape of modern digital history and its preservation for future generations.