21 October 2027

• 294th day of the year. There are then 71 days left in 2027.
• 42nd Thursday of 2027.
• on the 42nd week of 2027 (using ISO standard week number calculation).
• Birthstone for this day: Opal and Tourmaline

There are no major holidays or observances in New Zealand for this date.

• Sukkot (Continues) - South Africa, United States, United Kingdom, Canada, Australia
• Spirit Day - Popular in: United States, United Kingdom, Canada
• World War II Victims Remembrance Day (Дан сећања на српске жртве у Другом светском рату) - Popular in: Serbia
• Apple Day - United Kingdom
• Police Commemoration Day - India