P: Edit Capture Time issue - Need a way to set all photos selected to same date & time

Thanks, that must be it. But they really need a way to change a selected group to the same Date, as the old 7 year ago post you give says. Not too fast acting on this...[that's a hint, Adobe]

I'll try the plugin referenced in that post. Really appreciate your answer--many thanks.

I just scanned 7000 of my father's slides dated from 1950 to 1977. The creation date in the file is the date of the scan. He has the actual dates on every slide and I've been changing them to that date using Metadata>Edit Capture Time>Adjust to a Specified Date and Time where I enter, for example, 11/1/1964.

I typically change a number of photos selected at one time and sometimes it works and I see the new date in the right column in Library as Capture Date. But somewhat randomly, it will change all but the last few photos to the correct date and the remaining ones are a date in the far past, near past or future (e.g. 6/2/1908 or 5/1/1964 or 3/21/2021--all examples I've seen today while trying to get 11/1/1964). It does always seem to work correctly if I only change one photo at a time--but lack of a negative isn't a proof that it does always work for one at a time, especially since I nearly always do multiples.

This is costing me lots of time and frustration with so many slides to change. Help please.

Lightroom Classic 10.1 Camera Raw 13.1 on Dell XPS13 laptop with Win10 latest release

Why conversations get merged: https://feedback.photoshop.com/conversations/lightroom-classic/lightroom-auto-import-to-folders-organized-by-date/5f5f44f14b561a3d422ab0ba?commentId=5f5f48984b561a3d422bdf45 

I use GeoSetter outside of LR to set dates.  No matter what tool you use, it it is external to LR (i.e., not a plug in) you should first "save metadata to files" before you use the external tool.  Then "read metadata from files" afterword to get the new dates into the LR catalog. 

Depending on file type, this may create XMP "sidecar" files next to your image files.  After you "read metadata from files" you can delete the XMP sidecar files if you wish.

I take care of it outside of LrC using ExifTool, myself, but @alan_harper posted instructions on using a plug-in here that might be helpful -

Lightroom: How I set the capture time of a bunch of photos

Very weird.. seems like a necessary option. isn't there an add on that can help?

thank you for your reply

Agreed.  Been suggested for years though with no movement as far as I can tell, so I wouldn't hold my breath.

Correct. There is no option to actually change all selected images to a specified date./time -- and there should be.  

I'm guessing you're running into a common misunderstanding of the "Adjust to a specified date and time" option.  That option actually adjusts multiple images by the same AMOUNT of time.

If you select multiple images, the most selected image will be changed to the date and time you enter and all the other images will be adjusted by the same amount.

For example, if your change added 5 minutes to the most selected image, the time on all the other images would be adjusted to +5 minutes of what they were previously.

Lightroom doesn't have a function to change multiple images to the SAME date and time.