"The idea behind establishing this convention was to eliminate noise generated almost every time someone comes in and greets using some form of day-time based greeting, and then channel members on the other side of the globe start pointing out that it's different time of the day for them. Now, instead of spending time figuring out what time of day is it for every member of the channel, we spend time explaining newcomers benefits of UGT. " via migurski

dense writeup of an event I did not attend (about time)

innovations in timekeeping; combining time in space