適時開示ヘルパー is a Chrome extension designed to enhance the usability of TDnet, a timely disclosure information browsing service. This free extension, developed by ティン＠iMarket（適時開示ネット）, allows users to select the publication date when accessing TDnet on a Mac.

With 適時開示ヘルパー, users can conveniently browse and access timely disclosure information on TDnet. The extension provides the option to choose the desired publication date, allowing users to access specific information based on their preferences.

Please note that the design around the icon area on the original page may be affected by using this extension. However, it is within an acceptable range and does not hinder the overall usability of the extension.