google-photos
Since Google moved to the new system, I can't figure out how to organize pictures by name like it used to work: https://photos.google.com/collections. There's no item in the menu to sort pictures.
I uploaded new pictures, put them in a new Collection… and now what?
Does someone know?
Google… didn't help.
If you upload using the Google Photos uploader, albums won't get automatically created, but the folder name will get saved with the photo metadata.
Try this: after uploading your photos from multiple folders, do a search to one of the folder names ("solar eclipse" in your case). This will list all your photos uploaded from that folder. Now - for the moment - you can put up with this funcitonality (always accessing your albums by a search).
If you have the Google Photos saved in your Google Drive, you should be able to install the Google Drive for Mac / PC to get the folder 'mounted' on your computer.
From there, you can use an application such as dupeGuru (which works on Mac and Windows). You should be able to scan the Google Photos folder within your Google Drive and find the duplicates.
dupeGuru Actions -- Do whatever you want with your duplicates. Not only can you delete duplicates files dupeGuru finds, but you can also move or copy them elsewhere. There are also multiple ways to filter and sort your results to easily weed out false duplicates (for low threshold scans).
Best Answer
You cannot sort in Google Photos / Picture Collections.
Head to Picasa Web Albums, which is just the old Google+ Photos
From there, you can sort:
Since 2011, people have been complaining about this: