Consecutive Days is Flawed
It's quarter past midnight and my consecutive/visited days counter is not including today. Is I'm in the UK, GMT timezone. Is this a UTC issue? GMT is currently UTC + 1.
Everything is calculated based on UTC time zone. Just like you, for me consecutive days counter changes at exact 5:30 am in the morning time.
You can also notice this time in your reputation history page, it always shows UTC time, when it was voteup/down or any other action taken.
I know about the UTC time zone thing. I still think it would be helpful to indicate on the user profile when the new day will start (either the local time of UTC midnight or hours until UTC midnight) - just above or below the number of consecutive days.