31, 28 or 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31… the inconsistency in the months must be addressed when designing a calendar such as our Saros, first introduced in 2012 with the Sky-Dweller. Like all calendars, it autonomously differentiates months with 30 and 31 days, and only needs to be set when February turns to March. But the real beauty of our system is in its minimalism – only four gear wheels and two gear ratios. The Saros, a most ingenious watchmaking complication.
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