Reference data

7,698 airports, heliports and stations worldwide with IATA and ICAO codes, city, country, latitude/longitude, altitude, UTC offset and IANA time zone, from the OpenFlights airports database as of 2026-09-05.

21,257 public holidays across 204 countries for 2020 to 2027 with date, country, English and local name, holiday type, whether it applies nationwide, and the sub-national regions it applies to, from the Nager.Date API as of 2026-09-05. Useful for trading-calendar and settlement logic.

419 time zones from the IANA tz database with the ISO 3166 codes of every country each zone covers, the primary country, decimal latitude and longitude of the principal location, the UTC offsets in force in January and July 2026, whether the zone has kept distinct clocks since 1970 (zone1970.tab) and the maintainers' comments, from the tz project's zone.tab and zone1970.tab as of 2026-09-06.

Every country and territory in ISO 3166 (250 rows) with alpha-2, alpha-3 and numeric codes, common and official names, capitals, UN region and sub-region, land area, independence and UN-membership flags, currencies, languages, centroid coordinates, landlocked flag, land borders, top-level domain and calling code. Built from the mledoze/countries compilation on 2026-09-05. The reference table every other dataset joins to; pair with the World Population set for headcounts. Read with pandas.read_csv(path, compression='gzip').

161 currencies in circulation with ISO 4217 code, name, symbol, and the alpha-2 codes of every country that uses each one. Derived from the mledoze/countries compilation on 2026-09-05. Pair with the Forex OHLCV set for rates.

9,607 country-month observations of air passengers carried (all commercial flights, scheduled and non-scheduled, total transport coverage) for 39 reporting geographies (EU aggregates, every EU member state, Iceland, Norway, Switzerland, the United Kingdom and Western Balkan and Turkish candidate countries), 1993-01 to 2026-06, from the Eurostat dissemination API (table avia_paoc) as of 2026-09-06. Monthly periods are dated to the first of the month; country coverage starts in different years.

217 economies classified by the World Bank with ISO3 and ISO2 codes, geographic region, administrative region, income group (low, lower-middle, upper-middle, high), IDA/IBRD lending category, capital city and its coordinates, with the World Bank's short codes alongside each label, excluding the 78 regional and income aggregates, from the World Bank country API as of 2026-09-06.

34,128 cities and towns worldwide with country, first-level administrative region and GeoNames identifier, from the datasets/world-cities compilation of GeoNames as of 2026-09-05.

119,109 observations across 23 US external-sector series from FRED: the monthly goods, services and total trade balance with exports and imports on a balance-of-payments basis (Census Bureau and BEA), the quarterly current-account and goods balances from the BEA international transactions accounts, quarterly NIPA exports, imports and net exports, daily Federal Reserve H.10 spot rates for the Chinese yuan, Canadian dollar, Mexican peso, Japanese yen, South Korean won, Indian rupee, Brazilian real, Swiss franc, British pound and euro, and the monthly nominal broad, advanced-foreign-economies and emerging-market-economies dollar indices. Long format with series name, frequency and unit on every row, full history from FRED as of 2026-09-06.