About Zerdago
Zerdago is an independent cultural agenda for the Basque Country, bringing together events from both Iparralde and Hegoalde in one place: concerts, theatre, exhibitions, festivals and much more, in four languages (Spanish, Basque, French and English).
Every week we curate: instead of a sea of events, we highlight a few that are really worth it, with everything you need to go (what it is, when, where and how to get there).
We gather events from official public sources and then normalise, deduplicate and translate them. This is an independent project: when you can, double-check times and tickets on the organiser's website.
How it is made
Events are collected twice a week from official public agendas, not copied from other websites. Each source is read raw and normalised into one shape: start and end dates, time, town, venue, address, category and image.
Then come the duplicates, because the sources overlap: the same concert can arrive by three different routes. Matching runs in three passes — exact signature, proper nouns that survive translation, and a manual read of whatever is still doubtful — and only clear matches are merged. Anything uncertain stays separate and is decided case by case.
Finally, what is missing gets translated into the four languages. When a listing has no translation of its own, the original text is shown with a label naming its language, and that version is not offered to search engines as though it were a translation.
The weekly pick
A complete agenda helps nobody: with thousands of live events, the hard part is not finding something, it is choosing. So every week a person picks a handful of plans by hand and writes why they are worth it, with the time, the place and a practical tip.
That selection is never filled in automatically. If there is no pick one week, the site removes the whole section rather than showing a list nobody chose.
How fresh the data is
The catalogue is refreshed on Mondays and Thursdays. If more than two weeks go by without an update, the site says so on its own front page and hides the "today" and "this weekend" shortcuts: we would rather tell you the data is old than pretend it is current.
What we are not
We do not organise events, we do not sell tickets and we do not charge for being listed. We are not the original source of any of this data either: every listing links to whoever published it. Before you set off, always confirm the time and the price on the organiser's own site, especially if booking is required.
Data sources
Data comes from these public sources, which we credit:
Mistakes and corrections
If something is wrong, it most likely arrived that way from the source: every listing links to the organiser's site, and that is where it gets fixed at the root. All sources are re-read twice a week, so a correction at the origin reaches us within a few days.