What Is 15 Days Called?

A period of 15 days is called a "fortnight" in British English, or can be referred to as "two weeks," "half a month," or "biweekly period."

Different Terms for 15 Days

Common Names:

1. Fortnight (British English)

   • Most traditional and formal term
   • Derived from "fourteen nights"
   • Commonly used in UK, Australia, India

2. Two Weeks

   • Standard American English
   • More universally understood
   • Literal description (14-15 days)

3. Half Month

   • Approximate term
   • Used in financial contexts
   • Semi-monthly reference

4. Biweekly Period

   • Occurring every two weeks
   • Common in payroll terms
   • Can cause confusion (see biweekly explanation)

Usage Examples:

• "I'll see you in a fortnight" (15 days from now)
• "The project deadline is two weeks away"
• "Rent is due biweekly" (every 15 days)

Key Points:

• Exact count = 14 or 15 days depending on context
• Fortnight = exactly 14 days/nights
• Half month varies (13-16 days) based on month length