Glossary
Sidereal day
A unit of time used by astronomers defined as the interval of time taken by a star to make two successive upper meridian transits.
Related theme:
- french: Jour sidéral
- japanese: 恒星日／コウセイビ
- chinese: 恒星日
HH Magazine News
Jaeger-LeCoultre wears its heart on its sleeve
22 May 2012
Among the lots at a forthcoming sale at Christie's in Milan will be three exclusive Jaeger-LeCoultre watches, made in su…
The phenomenal success of mechanical watches
15 May 2012
In ten years, mechanical watches have seen their share of total exports increase from less than half to almost three qua…