13 September 2025

• 256th day of the year. There are then 109 days left in 2025.
• 37th Saturday of 2025.
• on the 37th week of 2025 (using ISO standard week number calculation).
• Birthstone for this day: Sapphire

There are no major holidays or observances in South Africa for this date.

• Selichot - United States, United Kingdom, Canada
• Day of the Children Heroes (Día de los Niños Héroes) - Mexico
• International Chocolate Day (Día Intl. Del Chocolate) - Popular in: Spain
• Día del Bibliotecario - Argentina
• European Heritage Days Starts - European Union
• Dia do Programador - Brazil
• Roald Dahl Day - United Kingdom