What is an SE “day”? When does each day start?
Are users' local time zones are considered when calculating whether or not to award them the woot!/Enthusiast badge? If not, then which time zone is used in the calculation?
Since all of SO is in UTC (daily reputation caps etc.), I suspect Enthusiast/Woot badge makes no difference and it is using UTC as well.
I find this particularly frustrating. My timezone is UTC+10, so if I visit the site in the morning, but the next day I only visit it in the evening, then a day goes missing from the statistics and thus the woot badge is not awarded - even though I visited the site each day (in my local day).
It's really a bit demoralising...