Timepiece having a day / night display taking into account seasonal variations.

摘要

The timepiece comprises a watch movement, a calendar mechanism (221) and sunrise and sunset indication means (215; 209) taking into account seasonal variations. The calendar mechanism (221) includes a date display (223) and a month display (225). The means for indicating the sunrise and sunset (209) further comprise an annual cam (211) having a profile representative of the inclination of the sun with respect to the equatorial plane and arranged to be rotated through the mobile calendar by a third kinematic chain (218).