Based on the provided text, it is difficult to determine the specific content or topic of the website. However, some information can be inferred.
The text mentions copyright years ranging from 2020 to 2023 and makes references to certain time periods such as months, hours, and birth dates. It also includes a list that spans from years 1990 to 2099.
Though not clear from this excerpt alone, it seems that the website may deal with various subjects related to copyrights and potentially provide information about events or data related to specific time periods.
In order to obtain a more accurate summary, additional context or content from the website would be needed.