Today
It is August 31st/August 31st
It is the last day of summer vacation for students
# Imagine the student days
The summer vacation in July and August is always especially happy
And it just so happens that July and August are still big months (31 days), so two months plus a solid piece of 62 days, and let this happiness add one.
I wonder if you have ever wondered, most of the months in the year are sorted in order of size and size (February is special, but it can also be regarded as a small month), why July and August are 31 days, and they are the only consecutive months in the whole year?
To answer this question, we have to go back to the time of the Roman Empire more than 2,000 years ago. At that time, although the Roman Republic was unusually strong and victorious in foreign wars, the calendar was very chaotic, the number of days per month was different, and it was often changed. So in 46 BC, Gaius Julius Caesar, the founder of the ancient Roman Empire, decided to unify the new calendar, because Julius Caesar himself was born in July, which is supposed to be the great month. Therefore, the new calendar stipulates that the month of each single month is a large month, 31 days, and the double month is a small month, 30 days of each month, of which July is named after Julius, which is derived from the name of Julius Caesar.
Therefore, there will be 6 large months and 6 small months in a year, a total of 366 days, while the usual year only has 365 days, how to deal with so many days? Because the criminals who were sentenced to death at that time were executed in February, the unlucky February was eventually subtracted from 1 day and became 29 days.
So, the question of why July is 31 days has been solved, so how can August become 31 days? The protagonist of this chapter is Gaius Octavius Augustus, the nephew of Julius Caesar and the first head of the Roman Empire.
After Augustus ascended to the throne, the calendar was further modified. Because he was born in August, according to the rules laid down by Julius Caesar, August is a small month, and he feels that his holiness and majesty should not match the small month, so he ordered that August should also be changed to a large month, which is 31 days like July, and renamed it after his own name, August, and so on. Interestingly, because of this change, the large months of the year became 7, while the small months were only 5, so there was 1 more day, so it had to be deducted from the unlucky February, so it was 1 day less, and finally February became 28 days. Later, Pope Gregory XIII improved and revised this calendar, changing it to the Gregorian calendar, perfecting the rules for leap years, which is the Gregorian calendar we use today.
Calendars are a very important subject for clocks and watches, so since its birth, the evolution and evolution of calendar functions has never stopped. As the most basic calendar function, the calendar is arguably the most common function in watches. However, it is precisely because the size of the month is not alternately sorted, so the ordinary calendar table can not be correctly recognized, the user needs to adjust the calendar display 5 times a year. After that, the implementation of the perpetual calendar function can not only correctly identify the logic of large and small months, but also solve the problem of leap year calendar with a 4-year cycle, becoming a representative of the complex function of the calendar.
However, what Xiaoha wants to talk about today is not a perpetual calendar, but a function between the ordinary calendar and the perpetual calendar, the annual calendar. The annual calendar function watch only needs to adjust the calendar of February once a year, and the rest of the large and small months, including July and August, can be displayed correctly for two consecutive 31 days.
Compared with the perpetual calendar, the annual calendar function reduces the technical threshold, and compared with the general calendar function, which requires frequent adjustments, the use experience of the annual calendar is more convenient, which is a very good and practical choice. So today I will introduce you to some annual calendar function watches.
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A. LANGE & SÖHNE
Lange 1815 series
Annual calendar watches
L051.3 manual calibre
Calendars, weeks, and months are all designed with pointers
Among them, the calendar is more coaxial with the week
Make the dial more concise and capable
BLANCPAIN
Blancpain Fifty Tons Series
Bathyscaphe
Automatic calibre 6054.P
The calendar window is located at 3 o'clock
The day of the week and month are listed up and down
It is a very rare layout design, very recognizable
CARL F. BUCHERER
The Pocherer Heritage Series
Annual calendar chronograph
CFB 1972 automatic chronograph movement
The eye-catching large calendar becomes the biggest feature of this annual calendar
The small month display window is discreetly located between 4 and 5 o'clock
CARTIER
Cartier Rotonde de Cartier series
Automatic calibre 9908 MC
Cartier's calendar is very designed
The month, calendar, and circle of the week are arranged from the inside out
Exudes a sense of luxury
GIRARD-PERREGAUX
Girard-Perregaux 1966 series
Almanac time equation table
GP033M0 automatic movement
In addition to the practical annual calendar function
This Girard-Perregaux watch also has a time equation function
Located at 4.30
The difference between true solar time and average solar time can be displayed
IWC
The Universal Portuguese Series
Automatic calibre 52850
The overall design of the Portuguese series annual calendar watches
It is quite similar to the classic Portuguese VII
The calendar at the bottom has been moved to the top
And the fan window displays the month, calendar, and week in turn
LONGINES
Longines Masters Series
Automatic calibre L897
Probably the most modest annual calendar watch
This Longines Master's Watch
It seems to be a simple way to display the month and calendar side by side
In fact, the annual calendar function is available
MONTBLANC
Montblanc Heritage
Chronometer series
Automatic calibre MB25.09
Timing + annual calendar function
This makes the dial look very complicated
However, through the coaxial design of the small dial
It is also clear to read
OMEGA
Omega Zunba series
8892 coaxial automatic calibre
The window displays the calendar, and the pointer indicates the month
This Omega Zunba series annual calendar watch is quite convenient to use
The names of the months in bold are a finishing touch
PARMIGIANI
Parmigiani Tonda Calendrier Annuel
PF339 automatic movement
The retrograde calendar display is a major feature of this annual calendar watch
The exact phase of the moon at the other 6 o'clock position only needs to be corrected once every 122 years
PATEK PHILIPPE
Patek Philippe
Ref.5205G
Cal.324 S QA LU 24H/206 automatic calibre
The concept of an annual calendar was born in 1996
It was created by Patek Philippe
This Ref.5205G dial above
Three fan-shaped windows
It can be described as a very classic "Patek Philippe" design
ROLEX
Rolex
The Voyager watch
Automatic calibre 9001
The annual calendar is one of the rare complications in Rolex watches
The Longitudinal Watch equipped with this function
The Ring Command used
Innovative system for rotating the outer ring to set the function of the watch
It is also unique to Rolex
Although there are not many brands that have launched calendar feature watches
But the characteristics of each family are distinct
Different, I don't know which one you like the most?
Don't skimp on leaving us a message ha
Editor: Yu Xiachen | Visual & Graphics: Amy
Image: From the brand (some from the web)
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