Two different clocks matter in outreach and they are not the same clock. There is the time you read a dashboard in, and the time a recipient receives an email in. Conflating them means either your reports are shifted or your sends are.
You can now set your own timezone and preferred date and time format in your profile. Every timestamp in the interface — campaign activity, message history, run logs — renders in it.
Campaign sending windows remain configured per campaign and per recipient, so setting your display timezone to Lisbon does not start emailing New York at 4am.