For reasons, I do not know or understand, our wedding photographers photos don't have the correct data in the EXIF data. I guess this could have been due to editing, I don't really know.
They used several cameras, and I have all the photos from them. I would like to combine these with the photos given to us by other guests. Some of these were taken on phones so I know the EXIF date/time is correct. I have confirmed this since they line up correctly with photos taken on my phone and my DSLR which I had confirmed the date was correct on beforehand.
I have tried several times to manually change this data based on similar photos (i.e. bride & groom with parents or bridesmaids etc.) but looking at later photos from the day, I find them not to be in the correct order.
What would be the best tool to do what I want? The sort of app I am imagining is one where I can move a slider to align the photos in 2 timelines before changing the data in the file and effectively merging the 2 into a single timeline. This would be repeated for each source of photos.
Or am I doing it the best way already?
OS can be Linux, Windows or macOS