Windows Explorer is a File Manager, so it naturally tells you the date for the file-- which you had just created. What happens if you import one of these pictures into an Image Viewer (like, on a Mac, Photos or Preview?) If the metadata are intact, then an Image Viewer should show you the Image Dates rather than the Files dates.
Try this and see if the date is correct in a view designed to read it. You may also want to fine an "exif" reader app (like "exifTool Reader" for the Mac) that you can use to examine the actual "properties" in the metadata.
Photos is an Image manager, not a File Manager. Images are not files. Images are constructed with information stored in multiple files, so a "filename" has little meaning for a picture. When exported, Photos can attach the original filename to the exported file. Like with a Mac, in Windows there may be apps that can change a filename to include the Exif date or other information.
While this has lots of stuff about the Mac version,
Basic Concepts and Terms About Photos - Apple Community
it might be useful.