How is International Day of Caves and Karst calculated?

This event is observed every year on 13 September.

When is International Day of Caves and Karst 2440?

Name: International Day of Caves and Karst
Start: 2440-09-13
End: 2440-09-13
Location: Worldwide

Promotes the study and protection of caves and karst landscapes, including their water resources and biodiversity.

Download an iCalendar file for International Day of Caves and Karst and add it to your calendar app.

When is International Day of Caves and Karst 2440?: International Day of Caves and Karst 2440 is on Thursday, 13 September 2440.
What day of the week is International Day of Caves and Karst 2440?: It falls on Thursday.
How is International Day of Caves and Karst calculated?: This event is observed every year on 13 September.