To relax a tasteless and too realistic feeling when looking at the calendar by giving it a sense of dream and an unusual different dimensional feeling, and at the same time to help vitalize the brain activations.
The calendar of this invention shows months and days somewhat in random but with a certain foreseeability rule on its display device, and he/she can tell today's date with the adaption calendar by Drawing 1 but also can ascertain the date with a commonly used calendar shown separately. These calendars, though, are either covered with a thin paper or have a similar device which allows a person to see only few numbers, the purpose of which is to relax a feeling of staring at the calendar but rather to enjoy the feeling that a person is in the different dimensional world away from the realistic world. A person needs to determine the date at his or her own risk that requires him/her a straining and intentional search and calculation, which in turn helps vitalize his/her brain activations.