Tag/Comment the entire day of work
It would be useful to have the possibility to tag or comment the entire day in order to remember additional facts happened during the day.
Not enough votes
This would be helpful to be able to tag days as working away from the office / holiday/sick and it would be especially helpful if multiple days could be selected at once.
Some of these activities may of course be billable and others would simply be useful to remind people why a day had no activity.