The interface is fully translated, and so is every written page — the guide, the learning articles, the data essays and the blog. What stays in Persian is what arrives from the data source itself: city, airport, airline and aircraft names, and the notes stored alongside them. Those will appear in Persian until the API carries an English field for them.

Flight punctuality

“On time” means the actual departure differed from the schedule by no more than fifteen minutes — earlier than scheduled counts as on time too. That difference is taken from the moment the source reported the actual departure; so part of it is the taxi to the runway and not the passenger's wait. That is why this number is meaningful for comparing airlines at one airport, and less so for comparing two airports far apart.

The sample count is written next to each number. A share computed on fewer than ۳۰30 for a measurement to rest on is not published at all, and instead you see “unknown” — a percentage over four flights is not a number.