Watch with a 24-hour watch face

Dial with an analog 12-hour display showing a 24-hour day ambiguously using an hour and a minute hand, and

• an additional display that serves to specify the time shown with the hour and minute hands and including two symbols each standing for the period of time from 6 o'clock in the morning to 6 o'clock in the evening and from 6 o'clock in the evening to 6 o'clock in the morning respectively,
• characterized by the combination of the following features:
• in the additional display, the two symbols are visible separately from each other, and
• the change from the night symbol to the day symbol at 6 o'clock in the morning and from the day symbol to the night symbol at 6 o'clock in the evening is either sudden and precise to the second or the symbol shown in the additional display, at a time close before an immediately pending change of symbol, is visually emphasized through movement in the form of shaking or by flashing such that there is always unambiguity with respect to the time.