Thanks! I successfully modified your script to adjust for my local timezone. Definitely seems to work on your example webbrowsertools site, though I still can’t seem to make AWS happy. no idea where they’re pulling their timezone data from, but it always shows me UTC no matter what (and yes, I followed your @match examples adjusting for amazon - the script triggers, just doesn’t fix the time displayed for instance monitoring the way I want).

anyway, thanks for sharing your script. I love it! I’ll keep playing around to see if I can figure what AWS actually uses to determine “local timezone”.

Any chance you could share your script? I’ve tried a few browser extensions to solve this but they never seem to work on the sites where I actually need them. Your approach sounds way better!