从技术上讲，只有当你在版权年对作品做出了贡献时，你才应该更新版权年。因此，如果你的网站在某一年里没有更新过，那么就没有地方可以修改文件来更新年份。

我不认为他们每年都重印纸质书。该书印刷年份的版权在以后所有年份都有效。

同样的原则也适用于网页。然而，“网站创建的年份”有点不同。所以，如果你改变了你的网站-你还没有完成。因此，在更新站点时，您可能希望更新版权年份。

版权应截至出版之日。

因此，如果它是一个静态内容(比如你链接到的时报文章)，它可能应该是静态版权的。

如果它是动态生成的内容，它的版权应该保留到当年

你的强迫症是罪魁祸首:)

你不需要在你的页面上添加任何关于版权的内容——除非你明确授权，否则版权会自动生效。根据国际条约的规定，版权也适用于预先设定的年限。我不知道确切的年份是多少，但它是很多，所以在你的版权声明中更新年份绝对没有意义。

作品的版权声明确立了对版权的要求。通知上的日期规定了索赔的时间。这意味着如果你更新了日期，你就不再主张原始日期的版权，这意味着如果有人在此期间复制了该作品，他们声称这是他们的作品，因为他们在你的主张之前出版了该副本，那么就很难确定谁是该作品的原创者。

Therefore, if the claim is based on common law copyright (not formally registered), then the date should be the date of first publication. If the claim is a registered copyright, then the date should be the date claimed in the registration. In cases where the work was substantially revised you may establish a new copyright claim to the revised work by adding another copyright notice with a newer date or by adding an additional date to the existing notice as in "© 2000, 2010". Again, the added date establishes how far back the claim is made on the revision.

个人完全没有理由更新版权年，因为在美国和欧洲，版权的寿命是作者的寿命加上70年(在其他一些国家，如加拿大和澳大利亚，是50年)。延长日期并不延长版权。这也适用于一个页面有多个贡献者，其中没有一个是公司。

对于公司来说，谷歌不会更新他们的版权日期，因为他们不关心他们在1999年开始并在今年更新的某些页面是在2094年还是2109年进入公共领域。如果他们不知道，你为什么要知道?(作为一名谷歌人，现在是前谷歌人，我被告知这也是内部源代码的政策。)

重要的是要认识到版权法已经发生了变化，对于非美国来源，特别是在美国于1989年3月1日加入《伯尔尼公约》之后，版权注册不再是执行版权通知的必要条件。 以下是引用自康奈尔大学法学院的resumé(2015年3月4日，转载自https://www.law.cornell.edu/wex/copyright:) “版权 版权:概述

The U.S. Copyright Act, 17 U.S.C. §§ 101 - 810, is Federal legislation enacted by Congress under its Constitutional grant of authority to protect the writings of authors. See U.S. Constitution, Article I, Section 8. Changing technology has led to an ever expanding understanding of the word "writings." The Copyright Act now reaches architectural design, software, the graphic arts, motion pictures, and sound recordings. See § 106. As of January 1, 1978, all works of authorship fixed in a tangible medium of expression and within the subject matter of copyright were deemed to fall within the exclusive jurisdiction of the Copyright Act regardless of whether the work was created before or after that date and whether published or unpublished. See § 301. See also preemption. The owner of a copyright has the exclusive right to reproduce, distribute, perform, display, license, and to prepare derivative works based on the copyrighted work. See § 106. The exclusive rights of the copyright owner are subject to limitation by the doctrine of "fair use." See § 107. Fair use of a copyrighted work for purposes such as criticism, comment, news reporting, teaching, scholarship, or research is not copyright infringement. To determine whether or not a particular use qualifies as fair use, courts apply a multi-factor balancing test. See § 107. Copyright protection subsists in original works of authorship fixed in any tangible medium of expression from which they can be perceived, reproduced, or otherwise communicated, either directly or with the aid of a machine or device. See § 102. Copyright protection does not extend to any idea, procedure, process, system, method of operation, concept, principle, or discovery. For example, if a book is written describing a new system of bookkeeping, copyright protection only extends to the author's description of the bookkeeping system; it does not protect the system itself. See Baker v. Selden, 101 U.S. 99 (1879). According to the Copyright Act of 1976, registration of copyright is voluntary and may take place at any time during the term of protection. See § 408. Although registration of a work with the Copyright Office is not a precondition for protection, an action for copyright infringement may not be commenced until the copyright has been formally registered with the Copyright Office. See § 411. Deposit of copies with the Copyright Office for use by the Library of Congress is a separate requirement from registration. Failure to comply with the deposit requirement within three months of publication of the protected work may result in a civil fine. See § 407. The Register of Copyrights may exempt certain categories of material from the deposit requirement. In 1989 the U.S. joined the Berne Convention for the Protection of Literary and Artistic Works. In accordance with the requirements of the Berne Convention, notice is no longer a condition of protection for works published after March 1, 1989. This change to the notice requirement applies only prospectively to copies of works publicly distributed after March 1, 1989. The Berne Convention also modified the rule making copyright registration a precondition to commencing a lawsuit for infringement. For works originating from a Berne Convention country, an infringement action may be initiated without registering the work with the U.S. Copyright Office. However, for works of U.S. origin, registration prior to filing suit is still required. The federal agency charged with administering the act is the Copyright Office of the Library of Congress. See § 701 of the act. Its regulations are found in Parts 201 - 204 of title 37 of the Code of Federal Regulations."