Why do you think it is "Friday"?

Users and even the company themselves make posts such as "Tuesday 3pm will be the start time of the event". I then have to check and discover "oh, what they mean is actually Wednesday 6am, better set my alarm early of I want to be involved or see what's happening".

Stack Exchange has a global userbase. There are significant enough portions from across the width of the timezone domain that, unusually for a USA-based computer, they use a UTC-based timing system (which I can check by comparing the system-recorded time of a post to what my clock said, and finding it is exactly $offset hours different.

This is why you see a three-day consecutive drop, with a four-day consecutive higher region. The "weekend" is not perfectly aligned around the world. It is "the weekend" somewhere in the world for a full 74 hours - not just the 48 that most would say is the length of two days.

Why do you think it is "Friday"?

Users and even the company themselves make posts such as "Tuesday 3pm will be the start time of the event". I then have to check and discover "oh, what they mean is actually Wednesday 6am, better set my alarm early if I want to be involved or see what's happening".

Stack Exchange has a global userbase. There are significant enough portions from across the width of the timezone domain that, unusually for a USA-based company, they use a UTC-based timing system (which I can check by comparing the system-recorded time of a post to what my clock said, and finding it is exactly $offset hours different.

This is why you see a three-day consecutive drop, with a four-day consecutive higher region. The "weekend" is not perfectly aligned around the world. It is "the weekend" somewhere in the world for a full 74 hours - not just the 48 that most would say is the length of two days.