We have a flight booking application.
Users can book flights from the departure airport timezone, in a different timezone than the departure airport itself.
The mobile app creates a date object as a unix timestamp which gets sent to our back end, which also saves all dates as unix.
We need to convert the date saved as a unix time stamp into the date of the departure airport. We have the timezone ID of the departure airport saved in our database.
We use Bubble as our back end.