Recently , we start using the Time to first response gadget on dashboard , could you help clarify the detailed arithmetic on calculating the time difference from when to when ? Also there is a question confuse me that the wrong day matched the issue even though no one acted on . e.g. the issue was acted on 15th Feb , but we find it on 18th Feb which shows on the chart by clicking the diagram . This may mislead my decisions so far . Awaiting your response .
Screenshot for the gadget: