lastmodpäivämäärä

Lastmodpäivämäärä is a term describing the date and time of the most recent modification of a page, document, or other digital resource. In practice it refers to the timestamp that records when content was last changed, and it is commonly used in version control, website administration, and content presentation. The concept is rooted in the English term last modified, and in Finnish contexts it is often expressed through phrases such as viimeksi muokattu päivämäärä or muokkauksen aikaleima.

In web technology, the related concept is the Last-Modified HTTP header, which conveys the last modification time of a resource. This header supports conditional requests (If-Modified-Since) and can improve caching efficiency by allowing clients to fetch updated content only when it has changed. The same idea underpins many content management systems and static site generators, where a field or variable stores the lastmod date to drive displays, feeds, or build decisions. Examples include templating variables in Hugo (Lastmod) and Jekyll (last_modified_at), as well as the page-footers in wikis that show when a page was last edited.

Important considerations include time zone handling, clock accuracy, and the chosen date-time format (ISO 8601 is common for interoperability). The lastmodpäivämäärä serves as a signal of content freshness and aids users and search engines in understanding the recency of information. It should be maintained consistently when content is updated to avoid confusion or misleading impressions of a page’s currency.

See also: Last-Modified header, version control, content metadata, ISO 8601.