I would like there to be an option for which time zone you want to see based on user account or globally on specific resource boxes/graphs. This would help out the folks in different parts of the world when the U.S. teams are off the clock.
Or you could just add this,
This may be a good option but the Automatic Time Zone should be applicable to across the whole site, so whenever you check alerts, run a report or just adjusting the graphs. It makes the whole user experience much easier than NOT having one.
Just my 2 cents.