Breguet Equation Marchante Ref. 5887 ⏱️

The Equation of Time refers to the difference between the civil time (which is measured by watches and cocks) and the solar time (which can be read on a sundial). The former is a practical approximation to the latter, but differs between minus 16 minutes to plus 14 minutes.

The watchmakers at Breguet have developed a strikingly simple and attractive watch that displays the Equation of Time 'on the go' without the usual mental calculations of the correction values which one would need to add to or subtract from the minute hand.

This video presents the astronomical background behind the complication and introduces the Breguet Equation Marchante Ref. 5887.