Bestie Day is usually celebrated on June 8 each year, and in 2026 it falls on Monday, June 8. Some people also use “Bestie Day” more loosely for different friendship-themed observances, but the most common date online is June 8.

Quick Scoop

  • Main date: June 8.
  • 2026 day of the week: Monday.
  • Also called: National Best Friends Day or Best Friend’s Day.

If you want, I can also give you a short caption or message for Bestie Day.