11 September 2027

• 254th day of the year. There are then 111 days left in 2027.
• 37th Saturday of 2027.
• on the 36th week of 2027 (using ISO standard week number calculation).
• Birthstone for this day: Sapphire

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

• 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
• Uthradam (KL) (ओणम) - India