15 December 2026

• 349th day of the year. There are then 16 days left in 2026.
• 50th Tuesday of 2026.
• on the 51st week of 2026 (using ISO standard week number calculation).
• Birthstone for this day: Turquoise & Blue Topaz

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

• Virgen de Cotoca - Bolivia
• Kingdom Day (Koninkrijksdag) - Netherlands
• Bill of Rights Day - United States
• Día del Camionero - Argentina