[PJ]

Is it possible for a buddypress user to set their own time zone so the site’s time stamps reflect according to their location?

[r-a-y]

It’s possible, you could try setting up the timezones as an xprofile field, but you’d still have to write a custom plugin to override any timestamp that has a filter like `bp_activity_time_since` (available in bp-activity-templatetags.php).