11 September 2025

• 254th day of the year. There are then 111 days left in 2025.
• 37th Thursday 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.

• Ethiopian New Year - Popular in: United States, United Kingdom, Canada
• Cataluña Day (Día de Cataluña) - Spain
• Birthday of Queen Paola (Verjaardag van Koningin Paola) - Belgium
• Virgen de Coromoto - Venezuela
• Patriot Day - United States
• Día del Maestro (Argentina) - Argentina
• Genevan Prayer Day (Fasten Genf) - Switzerland
• RUOK? (Are You Okay Day) - Australia