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GRAND LANGE 1 MOON PHASE

LANGE 1 family

99.998 per cent precision

How much time elapses from new moon to new moon? The accurate calculation of the so-called lunation is one of the most complex issues of general lunar theory. Indeed, it varies and over a decade can exhibit a difference of more than 13 hours. On average, a lunation lasts 29 days, 12 hours, 44 minutes and 3 seconds. Lange’s watchmakers wanted to reproduce this duration as accurately as possible.

Close-up of movement L095.3

Movement L095.3

The GRAND LANGE 1 MOON PHASE gives the earth’s companion a place at which it garners the most attention: on the main dial, the moon-phase display occupies a particularly large stage with a disc diameter of 14.3 millimetres. The golden moon tracks the orbit of the original with an accuracy of 99.998 per cent. Once correctly set, the display only needs to be corrected by one day after 122.6 years, assuming the watch runs without interruption.

Explore further

Moon-phase display
Moon-phase display
Most of our moon-phase displays reproduce the moon’s orbit with a precision of 99.998 per cent.
Outsize date
Outsize date
The A. Lange & Söhne outsize date enables a date display with digits around three times as large as those in watches of comparable dimensions.
Power-reserve indicator
Power-reserve indicator
The UP/DOWN display reminds the owner to rewind the watch before it stops running.

How can we be of service?

Whether you are in search of a specific model, have questions out of interest or need a service request for your timepiece – we are delighted to help you. We are at your service by phone, email or in one of our boutiques.

The A. Lange & Söhne salon in Zurich