A method for planning a task based on a graphical representation of time is provided. The method includes (i) displaying at a display unit a first graphical representation of time at a first magnification level, (ii) processing a first input including a gesture on the first graphical representation of time, and (iii) displaying, at the display unit, a second graphical representation of time of a different shape at a second magnification level based on the gesture, (iv) processing a second input including a gesture on the second graphical representation of time to select a third duration from the second graphical representation of time, (v) processing a third input including content associated with the task, and (vi) generating the task associated with the third duration. The first graphical representation of time represents a first duration, and the second graphical representation of time represents a second duration.