thisday

Thisday is a term used to denote the events that occurred on the current date in past years. Used informally in speech as "on this day," it is also the name of many journalistic and digital features that summarize historical events tied to the date. The phrase functions as a temporal anchor, connecting the present with history through anniversaries.

In print and broadcast media, "This Day in History" or "On this day" segments collect notable events by date, including political milestones, cultural moments, scientific breakthroughs, births, and deaths. Online, many news sites, encyclopedic projects, and social platforms publish daily lists or interactive timelines that users can browse by calendar date.

Content typically includes a curated list organized by year, sometimes filtered by region or topic. Many entries cite primary or secondary sources and note the date's historical significance or the event's enduring impact. Editors may exclude trivial items and indicate when dates are approximate.

Historically, the practice traces to almanacs and chronologies that recorded events by calendar date. The rise of newspapers and radio led to recurring "on this day" features, later expanded by digital search and social media. The concept is used for education, commemoration, and public memory, as well as for navigation and calendar apps.

See also: almanac, chronology, history by date, on this day.