Never-ending calendar

A computer-implemented method, the method being implemented by a computer program product comprising a non-transitory computer readable medium having stored there on a computer program comprising computer executable instructions which when executed by one or more processors, cause the one or more processors to carry out operations for locating a year of interest in a perpetual calendar system, the operations comprising:

• accessing the perpetual calendar system including:
• a plurality of pages with each page having a calendar identified by a corresponding page index, a first array of letter positions, each letter position in the first array denoting a position corresponding to a digit in Gregorian numerical system, a second array of numbers corresponding to digits in the Gregorian numerical system, and a third array of symbols comprising a plurality of groups of years, wherein each group corresponds to a related letter position and a related number in the first array and the second array respectively;
• determining at least one group in the plurality of groups of years in the third array, the at least one group being associated with the year of interest such that the year of interest is one or the years in the at least one group;
• determining the related letter position from the first array and the related number from the second array respectively that are associated with the at least one group;
• generating a combination of the related letter position and the related number to form a page index;
• and
• navigating to the page of the perpetual calendar system associated with the determined page index to locate the year of interest in the perpetual calendar system.

An apparatus providing a perpetual calendar, the apparatus comprising:

• a first array of letter positions, each letter position in the first array denoting a position corresponding to a digit in Gregorian numerical system;
• a second array of numbers corresponding to digits in the Gregorian numerical system;
• and
• a third array of symbols comprising a plurality of groups of years, wherein each group corresponds to a related letter position and a related number in the first array and the second array respectively,
• such that a combination of:
• the related letter position from the first array, the related number from the second array, and the plurality of groups of years in the third array is used to locate a calendar for a year of interest,
• and wherein the combination corresponds to a page index in the perpetual calendar system constituted by a plurality of pages with each page having a calendar identified by the corresponding page index.