So here goes:
Edit: Unless you specifically 'log out', you are considered logged in, even if you close your browser. ( Have not checked if it applies, when you shut down your computer). So it shows the last time you had 'logged out'.
Nope, Yayawar. Not yet. I had logged out and logged in today in the morning, but now it shows that i had last logged in on Nov 16, 2017. Maybe one more tweak, also factoring the time?:
Oh, so to actually put it right. Any change in phpBB setting comes into effect only after you have logged out and logged in again. So you'll have to log out once to see the change.
Thanks. Shows correct date and time now.