Is there a way to set a date to change status of an issue?

[Ilaria Fazio]

I would like to automatise a workflow and have ticket changing status (from one step of the workflow to another) automatically after a certain time (or a certain date) 

[Alex Christensen]

You will need the Automation for Jira app to do this, but you could ask the user to input a value in a date field (let's call it "Transition Date" for now), then create an automation rule which checks some JQL validation every 5-10 minutes (or however often you want it to check) to see if the Transition Date is after right now. Example JQL for that automation rule might be:

"Transition Date" >= -5m

There are probably other ways to do this, but this is probably easy to test and check out.