Return to Answer

Unix timestamps (as used by touch) don't go beyond 1970, but are not relevant here anyway.

exiftool can be installed directly from the ExifTool Website as a standard macOS package, or via Homebrew/MacPorts. It allows to change the EXIF metadata of the picture, including the creation date. EXIF stores the same information in different tags, ideally all of them are updated to the same value.

exiftool -DateTimeOriginal="2023:01:15 12:34:56" -CreateDate="2023:01:15 12:34:56" -MediaCreateDate="2023:01:15 12:34:56" /path/to/image.jpg

PS: You need to do this before loading an image into Photos or similar. If it is already managed by Photos, export/copy it to a temporary folder, delete it in Photos, run exiftool and import it again.

Unix timestamps (as used by touch) can go before 1970 (thanks @slingerapp for pointing this out) but this is not relevant here.

exiftool can be installed directly from the ExifTool Website as a standard macOS package, or via Homebrew/MacPorts. It allows to change the EXIF metadata of the picture, including the creation date. EXIF stores the same information in different tags, ideally all of them are updated to the same value.

exiftool -DateTimeOriginal="2023:01:15 12:34:56" -CreateDate="2023:01:15 12:34:56" -MediaCreateDate="2023:01:15 12:34:56" /path/to/image.jpg

PS: You need to do this before loading an image into Photos or similar. If it is already managed by Photos, export/copy it to a temporary folder, delete it in Photos, run exiftool and import it again.

Unix timestamps (as used by touch) don't go beyond 1970, but are not relevant here anyway.

exiftool can be installed directly from the ExifTool Website as a standard macOS, or via [Homebrew](https://brew.sh/[MacPorts](https://www.macports.org). It allows to change the EXIF metadata of the picture, including the creation date. EXIF stores the same information in different tags, ideally all of them are updated to the same value.

exiftool -DateTimeOriginal="2023:01:15 12:34:56" -CreateDate="2023:01:15 12:34:56" -MediaCreateDate="2023:01:15 12:34:56" /path/to/image.jpg

PS: You need to do this before loading an image into Photos or similar. If it is already managed by Photos, export/copy it to a temporary folder, delete it in Photos, run exiftool and import it again.

Unix timestamps (as used by touch) don't go beyond 1970, but are not relevant here anyway.

exiftool can be installed directly from the ExifTool Website as a standard macOS package, or via Homebrew/MacPorts. It allows to change the EXIF metadata of the picture, including the creation date. EXIF stores the same information in different tags, ideally all of them are updated to the same value.

exiftool -DateTimeOriginal="2023:01:15 12:34:56" -CreateDate="2023:01:15 12:34:56" -MediaCreateDate="2023:01:15 12:34:56" /path/to/image.jpg

PS: You need to do this before loading an image into Photos or similar. If it is already managed by Photos, export/copy it to a temporary folder, delete it in Photos, run exiftool and import it again.

Unix timestamps (as used by touch) don't go beyond 1970, but are not relevant here anyway.

exiftool can be installed via Homebrew or MacPorts, and allows to change the EXIF metadata of the picture, including the creation date. EXIF stores the same information in different tags, ideally all of them are updated to the same value.

exiftool -DateTimeOriginal="2023:01:15 12:34:56" -CreateDate="2023:01:15 12:34:56" -MediaCreateDate="2023:01:15 12:34:56" /path/to/image.jpg

PS: You need to do this before loading an image into Photos or similar. If it is already managed by Photos, export/copy it to a temporary folder, delete it in Photos, run exiftool and import it again.

Unix timestamps (as used by touch) don't go beyond 1970, but are not relevant here anyway.

exiftool can be installed directly from the ExifTool Website as a standard macOS, or via [Homebrew](https://brew.sh/[MacPorts](https://www.macports.org). It allows to change the EXIF metadata of the picture, including the creation date. EXIF stores the same information in different tags, ideally all of them are updated to the same value.

exiftool -DateTimeOriginal="2023:01:15 12:34:56" -CreateDate="2023:01:15 12:34:56" -MediaCreateDate="2023:01:15 12:34:56" /path/to/image.jpg

PS: You need to do this before loading an image into Photos or similar. If it is already managed by Photos, export/copy it to a temporary folder, delete it in Photos, run exiftool and import it again.