Abstract: A calendar is provided for behavior modification as well as a method for using the same. The calendar has calendar sheets and informational sheets. The calendar has objectives sections, data collection sections, analysis sections, non-date pages and/or detachable pages for use by an individual. The calendar may be customized and/or pre-designed for an individual or by the individual. In use, the behavior information may be recorded on the calendar sheet. Information associated with daily, weekly, and/or monthly behavior may be recorded. The information may include weekly and/or monthly averages and/or summations, delta calculations, and/or minimum/maximum data. The calendar may be adapted to measure or track indicators, such as, for example, developmental progress, caloric intake, amount and type of exercise, amount of fat, sodium or sugar, amount of cigarettes smoked, blood pressure measurements, weight gain or the like. A bottom space may also be provided to record monthly goals and/or objectives.

Abstract: A calendar comprising a medium upon which a plurality of indicia are applied, wherein each of the indicia coacts with an adjacent indicia, and wherein each of the indicia is visually indicative of a complete lunar day and a complete solar day. Each indicia for the lunar day coacts with two indicia for the solar day and each indicia for the solar day coacts with two indicia for the lunar day. Additionally, the calendar comprises an interlocking notched indicia weekday banner, wherein the interlocking notched indicia weekday banner represents the relation between the seven days of a Jewish week and the seven days of a secular week. Furthermore, each indicia may form a plurality of indicia identifying a respective plurality of days, a respective one or more weeks, a respective one or more months, or a respective one or more years.

Abstract: A multiyear calendar in the form of a multipage, book-like assembly with a standard page and 14 leaves on top thereof, each leaf rotatable along an edge seam to expose another leaf below. The standard page has a two dimensional array which graphically presents the basic information of the day and date for any given month in any given year. Each of the leaves lists the years for which it is used and a vertical array of 12 symbols each designating a month of the year and usable, in conjunction with the standard page, to determine the first day of each month.

Abstract: A message calendar for suggesting engaging in specified activities on a selected day in the future. The calendar has a main panel bearing indicia corresponding to all days and months of a calendar year. Masks are removably placed on the calendar to indicate a selected activity and a selected day. Each mask is configured to bear a pictorial device symbolic of the intended activity. Each mask has an opening for revealing indicia corresponding to the selected day and for concealing indicia corresponding to adjacent days. Additionally, removably adhered members bearing messages rendered in written languages may be adhered to further comment on proposed activities. The calendar includes a clock face having movable hands and an area devoid of indicia for storing masks and members bearing written messages by adherence.