Is my automation adjusted according to the time of the year (sunrise/sunset)?

Yes, the automation is adjusted according to your gateway's geographic location. 

When you define schedules or climate automations with relation to sunrise and sunset, these automatically adjust their timing according to the time of year at the gateway's location. 

It is even possible to offset the timing relative to sunrise / sunset by +/- 90 minutes.

Tip! You can update your gateway's geographic location by re-entering your home address in "Settings > Home Management > House name > Parameters > Location".