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A watch featuring an annual calendar displays the day of the week, the date and the month but not the bisextile years. The watch needs to be adjusted once a year.
Chronograph watches can measure and display elapsed time. Usually three subcounters on the dial display the elapsed seconds, minutes and hours.
The night and day indicator is an aesthetic complication which displays on the dial the movement of the sun and the moon. This complication must not be confused with the moonphase.