provide absolute departure/arrival timestamps?

[derhuerst]

If I understood the API correctly, it currently doesn't respond with absolute date+time values (e.g. a UNIX timestamp or an ISO 8601 string).

https://github.com/konhi/poland-public-transport-api/blob/main/src/public/v1/openapi.json#L295-L303

Including them would allow clients to have their own "x min/sec" left logic, enabling internationalisation, offline-updating countdowns, etc. Is it possible given the upstream API?

[konhi]

it currently doesn't respond with absolute date+time values
That's correct!

I definitely agree that absolute timestamps would be definitely better, and I have interest in doing that! Additionally, this is mentioned in both GTFS and FPTF. Thank you very much for pointing that detail out!