Hi everyone,

last week was once again the final Friday of the month (26th of March) and thus time for our twitter-based #fridaygeotrivia trivia contest.

See below for how to play.

The March 2021 geotrivia question:

“Name countries and territories that officially use the currency of another country (or currency block).”

Note, we were looking for legal use of the non-local currency, not de facto usage. Also incorrect are cases of currency pegs, where a local currency exists, but is tied to another. While most countries have their own currency, some don’t. Usually these are smaller countries, where it is deemed too expensive to maintain the infrastructure of a national currency. In other cases countries have chosen to “Dollarize” or “Euroize” as a way to bring stability to their economy.

Of course, there is no reason to wonder which currency is used in a particular territory, our geocoder returns currency information as an annotation.


#fridaygeotrivia is a game with two prizes:

  1. the sheer joy of geographic knowledge and pedantry.

  2. the bragging rights of getting the answer first.

Here’s the #fridaygeotrivia twitter thread, click through to see the discussion:

As always, thanks to everyone who joined in. It was fun.

The geotrivia answer:

  • AUD - KI, NR, TV
  • CHF - LI
  • EUR - AD, MC, ME, SM, VA, XK
  • NZD - CK, NU, PN
  • USD - BQ, EC, FM, MH, PA, PW, SV, TC, TL, VG

How to play

Anyone can join in, you just need a twitter account. Please note - these edition of the game was played long ago - these days we play on Mastodon, not twitter.

  • Reply to the question thread on twitter (embedded below) using the hashtag #fridaygeotrivia in your answer.

  • Only one answer per tweet

  • While you can use a map, please do NOT use the internet to just search for an answer. That is cheating and will lead to seriously bad geokarma.

  • To get full points for an answer it is good form not just to name the relevant country but (if possible) to include the emoji flags of the country.

Some people have complained the format is a bit chaotic and hard to follow. Yes, the mad chaos is part of the fun. Embrace it. The goal is just to have fun and learn. We win by playing

Happy geocoding,