Patent ID: 8477564

Claim:
A timepiece equipped with a calendar mechanism including two date indicators, the timepiece comprising: a first date indicator configured to indicate a units place of a date; a first date jumper for setting a position of the first date indicator in a rotation direction; a second date indicator configured to indicate a tens place of the date and to singly indicate a one-digit date; and a second date jumper for setting a position of the second date indicator in a rotation direction; wherein the first date indicator has a first date character display surface provided with a set of numbers including “0”, “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8” and “9” for indicating the units place of the date; wherein the first date indicator has 31 first date indicator tooth portions formed as inner teeth at an angular interval of (360/31) degrees and 12 calendar feeding teeth formed as inner teeth, the 12 calendar feeding teeth comprising first to tenth calendar feeding teeth arranged in a first direction at an angular interval of (360/31) degrees, an eleventh calendar feeding tooth arranged at an angular interval of (360*10/31) degrees in a second direction opposite to the first direction relative to the first calendar feeding tooth, and a twelfth calendar feeding tooth arranged at an angular interval of (360*10/31) degrees in the first direction relative to the eleventh calendar feeding tooth; wherein the second date indicator has a second date character display surface provided with numbers for singly displaying the one-digit date, and numbers for displaying solely the tens place of the date; wherein the second date indicator has at least one window portion for displaying the units place of the date using the numbers provided on the first date character display surface of the first date indicator; and wherein the second date character display surface of the first date indicator is arranged at a position closer to a dial than the first date character display surface of the second date indicator.