I know you can off set the time of a batch of photos by a certain number of hours (+8hrs). But I need to do this for years (e.g. keep the time and date, but change the year from 2015 to 2017). I need to do this for a few thousand photos. Is there any way I can automate it?
I never tried, however, you can do this with the same tool in LR you use for the hours offset.
Lr will keep the offset from the most selected to the other selected images and will correct accordingly.
To build on F. McLion's reply, this article explains in detail how Edit Capture Time can do what you want: https://www.lightroomqueen.com/articles-page/time-camera-incorrect-change-capture-time/