A calendar that can be used perpetually or over a wide range of years. That of Capt. Herschel covers, as given below, dates from 1750 to 1961 only, but is capable of indefinite extension.
Calendar that automatically accounts for the different lengths of the months as well as the leap years of the Gregorian calendar.
Set of calendars for finding the day of the week for a given date during a wide range of years
a chart or mechanical device that indicates the days of the week corresponding to any given date over a long period of years
a complication that adjusts automatically to account for the different lengths of each month girard perregaux richeville, including February during a leap year
A ?smart? calendar that self-adjusts to accommodate leap years and different month lengths. Accuracy of perpetual calendars until year 2100.
A complication that indicates leap years as well as the date.
A function that displays the current date and automatically adjusts for leap years.
A calendar that automatically adjusts for the months' varying length and for leap year. Perpetual calendars, which can be powered by quartz or mechanical movements, are programmed to be accurate until the year 2100. Many watch collectors suggest storing mechanical versions in motorized winding boxes when they aren't being worn in order to maintain the calendar countdown.
Calendar mechanism with display which automatically corrects for long and short months and leap years.
A watch calendar that automatically adjusts for 30 day months and leap-years.
A calendar that automatically adjusts for different lengths of months and leap year.
A complication displaying the day of the week, the date, the month - also correcting for leap years - and the phases of the moon. Operating on the 400 year cycle, perpetual calendars require no manual correction before February 2100.Perpetual calendars are almost always self winding and, if worn constantly, are one of the most useful of all complications.
calendar covering a number of years, see article on time and date.
A calendar (see â€œcalendar) that automatically adjusts for the monthsâ€(tm) varying lengths and for leap years.
A calendar mechanism that automatically corrects long and short months & self adjusts for leap years (i.e. it will count 29 days in February every fourth year).
the kind of calendar that automatically adjusts for different lengths of months (28, 29, 30, 31) and for leap years.
A complicated calendar mechanism compromising some 100 parts which takes account of months of different lengths and needs no manual correction.
The calendar module for this watch type automatically makes allowances for the different lengths of each month as well as leap years. A perpetual calendar also usually shows, the date, momth, and four year cycle, and may show the day of the week and moon phase as well.
calendar complication that adjusts automatically to account for different lengths of the month (30 or 31 days) and leap years. Perpetual calendars, which can be powered by quartz or mechanical movements , are programmed to be accurate until the year 2100.
A type of calendar that automatically adjusts for months of different lengths and indicates February 29 in each leap year.
A complication that shows the day, date and month, correcting for months of different lengths and leap-years.
A perpetual calendar is a calendar which is good for a span of many years, such as the Runic calendar.