17 September 2027

• 260th day of the year. There are then 105 days left in 2027.
• 38th Friday of 2027.
• on the 37th week of 2027 (using ISO standard week number calculation).
• Birthstone for this day: Sapphire

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

• Constitution Day - United States
• Australian Citizenship Day - Australia
• Marathwada Liberation Day - India
• MIA Recognition Day - United States
• Día del Profesor - Argentina