Abstract: The present invention is a day planner that visually integrates a solar-based calendar, such as a Gregorian calendar, including a month and daily structure, within a lunar-based calendar, such as a Jewish calendar. More specifically, the present invention allows a user to view his or her daily life via a day planner in relation to Jewish dates. Preferably, the day planner includes at least one Jewish calendar week that incorporates a corresponding Gregorian calendar week per page through visual indicia.