Q: Events in Photo!

No Events in Photos, and I don't think telling Apple (through: https://www.apple.com/feedback/photos.html) will breng them back.

Meanwhile I myself have got used to the missing Events (although those ported over from iPhoto look OK) by making more use of Albums/Smart Albums, etc.

You can create albums and use them in exactly the same way as you use events prior to this in iPhoto.

Use albums and folders - to simulate events after each import select all in the last import albums and click the + to create a new album - file it in a folder or loose in albus and it is like events

LN

Moments in Photos are the new Events, i.e. groupings of photos sorted by date taken.

When the iPhoto Library was first migrated to Photos there is a folder created in the sidebar titled iPhoto Events and all migrated iPhoto Events (which are now Moments) are represented by an album in that folder. To open the sidebar if it's not already open use the Option+Command+S key combination.

NOTE: It's been reported by several users that if the Event albums are moved out of the iPhoto Library folder in the sidebar they may disappear.  It's not widespread but several users have reported that issue.  Therefore, if you want to assure that you keep those Event albums don't move them outside the iPhoto Events folder.

There's a way to simulate events in Photos.

When new photos are imported into the Photos library go to the Last Import smart album, select all the photos and use the File ➙ New Album menu option or use the key combination Command+N.  Name it as desired.  It will appear just above the iPhoto Events folder where you can drag it into the iPhoto Events folder

 

When you click on the iPhoto Events folder you'll get a simulated iPhoto Events window.

The downside to the simulation is that the Albums/Events can only be sorted automatically by Title. But they can also be sorted manually, either in the sidebar or in the folder's window at the right.  This will change with the release of Photos 2 with El Capitan this fall.  That will allow the sorting by date or title, ascending or descending.

Tell Apple what missing features you'd like restored or new features added in Photos via Apple-Photos Feedback.