Redmine

If you look at the screenshot you will see a normal activity page (Sorry, had to blank out details).

However all the activities you can see on that day were done today. I then found out that the server timezone was set to PST (America) and while the activities were adjusted to my timezone the day separators aren't.

This means that the edit I did today at 3pm (Japanese time) occurred at 10pm the day before (PST time) while the 5PM Edit occurred after midnight PST so was displayed as today.

To fix the issue RedMine should adjust the day starting/ending times on the activity page to the user timezone.

(I found this problem because my server was set to the wrong timezone but this would affect spread-out teams)