Should I change my lighting schedule when the clocks go back/forward?

Should I change my lighting schedule when the clocks go back/forward?

This is down to personal opinion. The effect this will have on your corals will be minimum or not even noticeable. You could go into more detail and when the hours of sunlight are shorter, decrease the number of hours you have your lighting on for but as we all know, the more lighting in general (to a certain extent) the more your corals will thrive.