A range of dates is selected. For each date of the range of dates, a daily task list is displayed listing at least a portion of tasks having a start date or a due date matching the date. A user selection determines whether the daily task list includes only tasks having the start date or the due date for each date in the range of dates, or includes any task completed on each date. Appointments for each date in the range of dates may be presented, and the daily task list for each date may be displayed beneath, above, or alongside the appointments, or as part of a to do list. The tasks each may be assigned a color code allowing a task to be visually associated with another task or other object to which the color code also has been assigned.