There is no such information out of the box (there is an unofficial plugin which should record last logins, but not sure if it still working and you will have to run it for some time to gather the data). There is last logout date which might be enough. I think it is stored in ofPresence table, offlineDate field.
Ok, I had already located this column, I opened the topic more to see if it had another alternative. Thanks a lot for the help.