Abstract: To provide a structure capable of performing a correction which surely and easily turns a date display back by rotating a 1st date indicator and a 2nd date indicator in both positive and reverse directions. A timepiece with a calendar mechanism possesses a 1st date indicator, a 2nd date indicator, and a date intermediate wheel which rotates the 2nd date indicator by a rotation of the 1st date indicator. Calendar shift teeth of the 1st date indicator possess a positive rotation unlocking part and a reverse rotation unlocking part.

Abstract: A timepiece equipped with a calendar mechanism has a first date indicator for displaying the units numeral of the date, a first date jumper for setting a position of the first date indicator in a rotation direction, a second date indicator for displaying the tens numeral of the date, a second date jumper for setting a position of the second date indicator in a rotation direction, and a date intermediate wheel for undergoing rotation in accordance with rotation of the first date indicator to thereby rotate the second date indicator. The first date indicator has a first date character display surface including 31 numerals “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”. The second date indicator has a first date character display surface including four numerals “1”, “2”, “3”, and “0”, or a second date character display surface including three numerals “1”, “2”, and “3”.

Abstract: To provide a structure capable of performing a correction which surely and easily turns a date display back by rotating a 1st date indicator and a 2nd date indicator in both positive and reverse directions. A timepiece with a calendar mechanism possesses a 1st date indicator, a 2nd date indicator, and a date intermediate wheel which rotates the 2nd date indicator by a rotation of the 1st date indicator. Calendar shift teeth of the 1st date indicator possess a positive rotation unlocking part and a reverse rotation unlocking part.

Abstract: To realize, in a timepiece with a calendar mechanism having a 1st date indicator and a 2nd date indicator, a constitution in which a rotation center of the 1st date indicator and a rotation center of the 2nd date indicator are disposed in the same position without increasing the number of times at which the calendar mechanism must be corrected in the end of the month. The timepiece with the calendar mechanism possesses the 1st date indicator displaying a place of units, a 1st date jumper setting the 1st date indicator, the 2nd date indicator displaying a place of tens, a 2nd date jumper setting the 2nd date indicator, and a date intermediate wheel which rotates on the basis of a rotation of the 1st date indicator, thereby being capable of rotating the 2nd date indicator. The 1st date indicator has a 1st date letter display face containing 31 numerals, and the 2nd date indicator contains numerals of “1”, “2”, “3”, “0”, or has a 2nd date letter display face containing numerals of “1”, “2”, “3”.