Time Stamp for Shares
Currently there is no exact time stamps for shares. There should be a mouse over with the exact date and time, as it is with posts.
Good news: this has just been released to the cloud (version 16.×.)!
Good idea. I added this to our internal roadmap.
Pia Sondermann commented
This would be really helpful, for example when I consider to share a post again. It would make sense to know when it has been shared last.