Not necessarily. The release date can be well after the copyright date.
A corporate entity would not have a copyright date.
The copyright date of the original book is July 24th, 1954The copyright date of the movie is December 19th, 2001The copyright date of the video game is September 24th, 2002
The copyright date of Twilight is 2005.
No, a copyright date is the first date of publication and an imprint date can be many years later, e.g., a later edition based upon the original copyright date.
Each volume has its own copyright date.
the copyright date is 2005
what is the copyright date in the red badge of courage
Google gives the copyright date as the current year, because that's the date the page rendered.
Most websites give the current date as the copyright date, as that's when the page rendered.
The copyright date is the year the text was completed. It may or may not be the same as the publication date.
The year of the encyclopedia is the year of the copyright; there are far too many editions to answer this question directly.