WeekDate ® A Calendar Like No Other. It's likely you've been in this situation before: you're holding the phone between your ear and shoulder and your calendar in the other hand when the voice on the phone tells you that your weekly yoga group or monthly sales meeting has been moved to another day of the week. While some scramble through each week or month to make the change, the smart person has a WeekDate® calendar makes the change once and Voila! done for the year. WeekDate takes the stress out of everyday life. The patent pending WeekDate ® works in layers, so you can see months, weeks, and specific details all at once. And what's really great is that you only have to write repeating events (like your monthly book club, weekly status meeting, weekly bball night) one time. Only Write It Once. ®