How is Day of the Ninja calculated?

This event is observed every year on 5 December.

When is Day of the Ninja 2391?

Name: Day of the Ninja
Start: 2391-12-05
End: 2391-12-05
Location: Worldwide

Day of the Ninja is a fan celebration of ninja in popular culture, marked with costumes, games and other themed activities.

Download an iCalendar file for Day of the Ninja and add it to your calendar app.

When is Day of the Ninja 2391?: Day of the Ninja 2391 is on Thursday, 5 December 2391.
What day of the week is Day of the Ninja 2391?: It falls on Thursday.
How is Day of the Ninja calculated?: This event is observed every year on 5 December.