1. What is the International Day of Dumplings? It’s a holiday celebrated by eating dumplings for every meal, but in which each meal’s dumplings have to come from a different culinary culture.

2. What counts as a dumpling? This is a question without a simple answer, not least because there appear to be two separate types of food that receive the label dumpling in English. After much thought, this problem was resolved by creating a three-part definition, including one disjunction to wit: A dumpling is

1. either
   • a) dough wrapped around a filling and sealed, or a filling covered in batter, and prepared however you like; or
   • b) a solid ball or lump of batter or dough, boiled, steamed, or fried.
2. small enough to hold in one hand (excludes calzone)
3. big enough to be perceived as countable items while eating, not as a mass (differentiates against pasta).

[This definition has many contributors, but the primary work was done by Alexander Koller and Emily M. Bender.]

3. When is it celebrated? The International Day of Dumplings is celebrated the last Sunday of June. Further refinements to the calendar may be yet to be discovered.

4. That sounds like it might get super complicated to keep track of. Is there a calendar? Yep! There’s a public Google calendar here which has the correct dates through 2033: https://goo.gl/omgLZY

5. Wait, is that a holiday you made up? Well spotted. But hey, other people get to make up holidays, including greeting card companies, so why not us? A bit more history: Several years of enjoyment of the International Day of Pancakes with both culinary and linguistic delight ("What counts as a pancake anyway?") led to similar definitional discussions of dumplings plus a longing for a day dedicated to eating them. The solution was obvious!

6. Shouldn’t it be called the Day of International Dumplings? That doesn’t sound as good. Also, this one was developed with the assistance of friends from around the world, so it's international from the start!