RECONFIGURABLE PERPETUAL CALENDAR DEVICE OPERABLE UNDER RUDERMAN METHOD OF MAKING A WEEKDAY DETERMINATION AND METHOD FOR PERIODIC UPDATING OF THE SAME

SYSTEM AND METHOD FOR TRACKING FACE DAYS OF MOON SYNCHED TO GREGORIAN DATES

Never-ending calendar

Structure Improvement of Digital Perpetual Clock

Solar Digital Display for Vehicle

Electronic perpetual calendar with erasable and tackable surfaces

Calendar apparatus

GROUP CALENDAR INTERFACE

Real time universal date and time conversion

Systems and Methods for Creating Personalized Calendars

Electronic Calendar

Zigzag calendar

CALENDAR-TYPE MEDIA DEVICE

Automatic calendaring system