15 October 2021

• 288th day of the year. There were then 77 days left in 2021.
• 42nd Friday of 2021.
• on the 41st week of 2021 (using ISO standard week number calculation).
• 24th day of Fall. There were 67 days left till Winter.
• Birthstone for this day: Opal and Tourmaline

There are no major holidays or observances in the EU for this date.

• International Day of Rural Women - Popular in:
  CountryAustraliaCanadaIndiaNew ZealandSouth AfricaUnited KingdomUnited States
• Boss's Day - Popular in: South Africa, United States, India, Canada
• Teresa of Ávila (Santa Teresa de Jesús) - Mexico
• Global Handwashing Day - Popular in: United States, India, United Kingdom
• Dia do Professor - Brazil
• National Pug Day - United States