Data sources
A MOTIS (https://github.com/motis-project/motis) instance for all the data related to public transport. By default, Transitous (https://transitous.org) is used with sources, licenses, and attributions listed at https://transitous.org/sources/.
An outside service which converts geographic coordinates to a timzone. Latitude will be used in place of {lat} and longitude will be used in place of {lon}. By default, a proxy to timeapi.io is used.