15 January 2027

• 15th day of the year. There are then 350 days left in 2027.
• 3rd Friday of 2027.
• on the 2nd week of 2027 (using ISO standard week number calculation).
• 26th day of Winter. There are 64 days left till Spring.
• Birthstone for this day: Garnet

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

• National Hat Day - United States
• Composer Day (Día Del Compositor) - Mexico
• Día del Maestro (Venezuela) - Venezuela
• India Army Day - India
• Pongal (पोंगल) - India
• Dia do Professor (Venezuela) - Latin America
• Thiruvalluvar Day (Tamil Nadu) - India