Contact
One address reaches us. Include enough detail to reproduce what you saw and you will get a faster answer.
Write to hello@jet-lag-calculator.com. Messages are read by a person and answered in the order they arrive.
What to include
An airport is missing or wrong
Send the three letter code and the correct city, country or time zone. The dataset covers airports with scheduled passenger service, so smaller fields are excluded by design.
A plan looks wrong
Send the route, the flight dates and times, and your sleep window. Those four facts are enough to reproduce any schedule the calculator has ever produced.
A feature request
Tell us what you were trying to do and where the tool stopped you. Requests that describe the task rather than the solution are the most useful.
A privacy question
The calculator stores nothing and sends nothing to a server. If something on the site suggests otherwise, we want to know.
What we cannot answer
We cannot give medical advice, advise on melatonin dosing, or comment on how a medication interacts with a sleep schedule. Those questions belong with a clinician or a pharmacist who knows your history.