January 17 is the 17th day of the year in the Gregorian calendar. In common years it leaves 348 days until year-end; in leap years there are 349 days remaining. The day falls in the Northern Hemisphere's winter and the Southern Hemisphere's summer, and is commonly treated as part of the third week of January.

Calendar facts

The day is numbered within the system of the Gregorian calendar, the international civil calendar used by most countries. Because of leap-year cycles the count of remaining days shifts in leap years; rules and explanations for those adjustments can be found via resources on leap years.

Observances and cultural notes

January 17 features a mix of religious, civic and cultural observances in different places. In some Christian traditions it is the feast day of Anthony the Great (also called St. Anthony of Egypt), a figure associated with early monasticism. The date is also used for local anniversaries, national remembrance days, and community events that vary by country and culture.

History and notable events

Across history, January 17 has been the date of military operations, political developments, and technological or cultural firsts in various years. One widely remembered modern event beginning on this date was the start of the 1991 coalition air campaign of the Gulf War, often referred to as Operation Desert Storm. Other important occurrences on January 17 range from treaties and inaugurations to discoveries and natural events; specifics depend on the historical focus and region.

Notable births and deaths

  • Several well-known public figures were born on January 17; among globally recognized names are the boxer Muhammad Ali and the entertainer Betty White, both of whom are commonly cited in biographical summaries as having been born on this date.
  • Historical and cultural figures who died or were commemorated on January 17 are recorded in national and specialized chronologies; such lists help illustrate the day's recurring presence in public memory.

Because January 17 recurs annually it is often used as an anchor for yearly cycles of memorials, fiscal or academic timetables that begin in January, and for seasonal planning in both hemispheres. For more detailed lists of events, births and observances associated with this date, consult specialized chronologies and national calendars.