Patent ID: 7492669

Claim:
A timepiece attached with a calendar mechanism including two date indicators, comprising: a first date indicator for indicating a units position of a date; and a second date indicator for indicating a tens position of the date; wherein the first date indicator comprises a first date indicator wheel portion for rotating the first date indicator by rotation of a top train wheel and a drive cam for rotating the second date indicator and determining a position of the second date indicator; wherein the first date indicator includes a first character indicating face having 31 pieces of numerals of “1”, “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, “9”, “0”, “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, “9”, “0”, “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, “9”, and “0”; and wherein the second date indicator includes a first date character indicating face having numerals “1”, “2”, “3”, and “0”, and a second date character indicating face having a fan-like shape and including four pieces of trapezoidal-shaped portions formed by a pitch interval of (2*360/31) degrees through (3*360/31) degrees, three pieces of notched portions formed by a pitch interval of (2*360/31) degrees through (3*360/31) degrees, and a set of numerals comprising a numeral of “1”, a numeral of “2”, a numeral of “3”, and a numeral of “0”.