The Montblanc Nicolas Rieussec Rising Hours is like a jumping hour with a twist. The central numeral in the window at 12 o’clock reveals not only the hour but whether it’s a day or night hour. How does this work? The numerals 1 to 12 are cut out, skeleton-fashion, from an upper disc, which rotates above a bicolour day/night disc so that a light or dark hue appears behind the numeral – blue for night time hours and black for day. In the picture shown, the 6 is ingeniously dual-toned to indicate that day is ending and night is falling.
Rotating discs also indicate chronograph functions as well as day and date. This isn’t the first time Montblanc has displayed time using discs that turn and hands that stand still. The Rieussec chronograph uses discs rather than hands for elapsed seconds and minutes. A rotating disc was used on another model to indicate the hour in a second time zone.
Montblanc also introduced a Complete Calendar in its classic Star collection and several new models in its TimeWalker collection. The TimeWalker Voyager UTC shows the time in a second time zone and also functions as a chronograph.
The TimeWalker World-Time Hemispheres is a 24-city world timer offered in both northern and southern hemisphere versions. The ring of place names on the Northern Hemisphere model consists solely of locations in that hemisphere; the southern counterpart bears only the names of places situated south of the Equator. The two versions are equipped with totally separate movements, each reflecting 24 time zones.