- Old Style and New Style dates
Old Style (O.S.) and New Style (N.S.) are used in English language historical studies either to indicate that the start of the Julian year has been adjusted to start on 1 January (N.S.) even though documents written at the time use a different start of year (O.S.); or to indicate that a date conforms to the Julian calendar (O.S.), formerly in use in many countries, rather than the Gregorian calendar (N.S.).
The Gregorian calendar replaced the Julian in Catholic countries beginning in 1582. This change was also implemented in Protestant and Orthodox countries after a significant delay. In England and Wales, Ireland and the British colonies, the change of the start of the year and the change over from the Julian calendar occurred in 1752 via the Calendar (New Style) Act 1750. In Scotland, the legal start of the year had already been moved to 1 January (in 1600), but Scotland otherwise continued to use the Julian Calendar until 1752. Many cultures and countries now using the Gregorian calendar have different old styles of dating, depending on the type of calendar they used before the change.
The internationally used Latin cognates of O.S. are stili veteris or stilo vetere, abbreviated st.v. and translating as "(of) old style", and the respective cognates of N.S. are stili novi or stilo novo, abbreviated st.n. and translating as "(of) new style". Like the English speaking countries, other countries may use additional local language cognates like the German a.St. ("alten Stils" for O.S.). Also, parts of the Latin abbreviations may be capitalized, e.g., St.n. or St.N. for stili novi.
Differences between the start of the year
When recording British history it is usual to use the dates recorded at the time of the event with the year adjusted to start on the first of January. So, for example, the Battle of Hastings is universally known to have been fought on 14 October 1066. But the start of the Julian year was not always 1 January, and was altered at different times in different countries.
From the 12th century to 1752, the civil or legal year in England began on 25 March (Lady Day) so for example the execution of Charles I was recorded at the time in Parliament as happening on 30 January 1648 (Old Style). In modern English-language texts this date is usually recorded as "30 January 1649" (New Style). A full conversion of the date into the Gregorian calendar is 9 February 1649, the date by which his contemporaries in some parts of continental Europe would have recorded his execution. 25 March in New Style is 6 April, and this date is still the first day of the fiscal year in the United Kingdom.
The O.S./N.S. designation is particularly relevant for dates which fall between the start of the modern year (1 January) and the start of the contemporary year, which was 25 March in England up until 1752 (see Julian year article).
During the transition years between the first introduction of the Gregorian calendar on continental Europe and its introduction in Britain, contemporary usage in England started to change. In Britain 1 January was celebrated as the New Year festival, but the "year starting 25th March was called the Civil or Legal Year, although the phrase Old Style was more commonly used." To reduce misunderstandings on the date, it was normal in parish registers to place a new year heading after 24 March, for example 1661 had another heading at the end of the following December indicating "1661/62". This was to explain to the reader that the year was 1661 Old Style and 1662 New Style.
Differences between Julian and Gregorian dates
Conversion from Julian to Gregorian dates Time period (from
1 March of first year to
28 February of last year)
Сorrection, days 1–100 −2 100–200 −1 200–300 0 300–500 +1 500–600 +2 600–700 +3 700–900 +4 900–1000 +5 1000–1100 +6 1100–1300 +7 1300–1400 +8 1400–1500 +9 1500–1700 +10 1700–1800 +11 1800–1900 +12 1900–2100 +13 2100–2200 +14
The Julian calendar was formerly in use in many European countries and their colonies, rather than the Gregorian calendar, currently in use in most countries. Consequently and to avoid ambiguity, "Old Style" (O.S.) and "New Style" (N.S.) are sometimes added to historical dates to identify which system is being used (when giving a date in the period when both systems were in parallel use). This notation is used in Western European (and colonial) history: similar notations are in use for the equivalent conversions in Eastern Europe and Asia.
For a period of 170 years (1582–1752), both dating systems were in concurrent use in different parts of Western Europe and its colonies. The Julian calendar had drifted by 11 days from the solar calendar (due to its excess of leap years), so dates differ between the systems. System conversion for secular use occurred in Eastern Orthodox countries as late as the 20th century, and has still not occurred for ecclesiastic use in some of these countries.
Catholic countries such as Italy, Poland, Spain, and Portugal were first to change to the Gregorian calendar. Thursday, 4 October 1582 was followed by Friday, 15 October 1582, with ten days "missing". Countries that did not change until the 18th century observed an additional leap year, necessitating eleven "missing days". Some countries did not change until the 19th or 20th century, necessitating one or two more "missing days".
France changed from Julian to Gregorian Calendar on 9 December 1582 (O.S.) where the next day was 20 December 1582 (N.S.). France used the French Republican Calendar from 22 September 1792 (N.S.) to 31 December 1805 (N.S.).
Ireland, (and under the provisions of the Calendar (New Style) Act 1750), Great Britain and the British colonies, changed from Julian to Gregorian Calendar at midnight on Wednesday 2 September 1752, the next day was Thursday 14 September 1752.
In Russia, the terms "Old Style" and "New Style" have the same significance as elsewhere. The start of the year was moved to 1 January in 1700, but the Gregorian calendar was introduced there much later, on 14 February 1918 (Gregorian calendar) in Soviet Russia (which became the Soviet Union in 1922). Hence the October Revolution of 1917 is so called, despite having started on 7 November under the Gregorian calendar (25 October [Julian calendar]). Articles about the October Revolution which mention this date difference tend to do a full conversion to the dates from Julian to the Gregorian calendar. For example the article "The October (November) Revolution" the Encyclopædia Britannica uses the format of "25 October (7 November, New Style);" to describe the date of the start of the revolution.
It is sometimes remarked that William Shakespeare and Miguel de Cervantes died on the same date, 23 April 1616, but not on the same day. England was still using the Julian calendar in 1616, while Spain was using the Gregorian calendar. Cervantes actually died ten days before Shakespeare.
Possible date conflicts
Occasionally using different calendars has caused confusion between contemporaries. For example, it is related that one of the contributory factors for Napoleon's victory at the Battle of Austerlitz was the confusion between the Russians, who were using the Julian calendar, and the Austrians, who were using the Gregorian calendar, over the date that their forces should combine. However, this tale is not supported in a contemporary account from a major-general of the Austrian army, who tells of a joint advance of the Russian and Austrian forces (in which he himself took part) five days before the battle, and it is explicitly rejected in Goetz's recent book-length study of the battle.
Usually, the mapping of new dates onto old dates with a start of year adjustment works well with little confusion for events which happened before the introduction of the Gregorian Calendar. For example the Battle of Agincourt is universally known to have been fought on 25 October 1415, which is Saint Crispin's Day. But for the period between the first introduction of the Gregorian calendar on 15 October 1582 and its introduction in Britain on 14 September 1752, there can be considerable confusion between events in continental western Europe and in British domains. Events in continental western Europe are usually reported in English language histories as happening under the Gregorian calendar. For example the Battle of Blenheim is always given as 13 August 1704. However confusion occurs when an event affects both. For example William III of England arrived at Brixham in England on 5 November (Julian calendar), after setting sail from the Netherlands on 11 November (Gregorian calendar).
The Battle of the Boyne took place only a few months later in Ireland on 1 July 1690 "Old Style". However, it is commemorated as taking place on 12 July "New Style" by the Orange parades on "The Twelfth", and is an exception to the usual historical method of commemorating events of that period within Great Britain and Ireland by mapping the Julian date directly onto the modern Gregorian calendar (as happens for example with Guy Fawkes Night on 5 November).
Because of the differences, English people and their correspondents often employed two dates, dual dating, more or less automatically, as Benjamin Woolley observed in his biography of Dr John Dee, The Queen's Conjurer. Dee fought unsuccessfully for England to embrace the 1583/4 date set for the change. Woolley wrote because of "the decision, England remained outside the Gregorian system for a further 170 years, communications during that period customarily carrying two dates, one 'O.S.' or Old Style, the other 'N.S.' or New Style." Thomas Jefferson, for example, lived during the time Great Britain, Ireland and the British colonies eventually converted to the Gregorian calendar, so he instructed that his tombstone bear his dates of birth and death in the Old Style and New Style, respectively. At Jefferson's birth the difference would have been eleven days between styles, had the New Style been converted to yet, as is evidenced by his "original" birthday of 2 April and his New Style birthday of 13 April.
Countries that used lunisolar calendars
Japan, Korea, and China started using the Gregorian calendar on 1 January 1873, 1896, and 1912, respectively. They had used lunisolar calendars previously. None of them used the Julian calendar; the Old Style and New Style dates in these countries usually mean the older lunisolar dates and the newer Gregorian calendar dates respectively. In these countries, the old style calendars were similar but not all the same. The Arabic numerals may be used for both calendar dates in modern Japanese and Korean languages, but not Chinese.
Japan started using the Gregorian calendar on 1 January 1873, locally known as "the first day of the first month of Meiji 6" (明治6年1月1日 Meiji rokunen ichigatsu tsuitachi ). The preceding day, 31 December 1872, was "the second day of the twelfth month of Meiji 5" (明治5年12月2日 Meiji gonen jūnigatsu futsuka ).
Japan currently uses two eras: The Western era and a modified traditional Japanese era name (nengō). The months and days are those of the Gregorian calendar, but the year is either the Western year number or a year of the nengō of the emperor on the throne. Since 1873, an era and the first year of that era has begun on the day of the year that the emperor ascended the throne. The second year of that era began on the next 1 January even if the first year contained only a few days. All subsequent years of that era began on 1 January until that emperor died. For example, the first year of the Showa Era, used by Emperor Hirohito, contained only the last six days of 1926, while Showa 64, his last year, contained only the first seven days of 1989. The current Gregorian year 2011 corresponds to Heisei 23.
Korea started using the Gregorian calendar on 1 January 1896, which was the 17th day of the 11th lunar month in not only Korea but also in China, which still used the lunisolar calendar. The lunisolar Korean calendar is now used in very limited unofficial purposes only. In North Korea, the New Style calendar is used, but with Kim Il-Sung's year of birth used as year 0.
China and Taiwan
In China the Kuomintang-led Republic of China government adopted the Gregorian calendar on 1 January 1912. It kept the lunisolar Chinese calendar as well, especially for the timing of traditional holidays. The geographical reference for China standard time (UTC+8) has been longitude 120°E since 1929. When the Communists took over China in the late 1940s they kept this two-calendar system for the People's Republic of China. Today China, Hong Kong, Macau, Malaysia, Indonesia, Singapore and Taiwan all observe traditional holidays based on the traditional calendar, such as Lunar New Year, while timing other holidays, especially national anniversaries, according to the Gregorian calendar.
In China national guidelines (GB/T 15835-1995, General rules for writing numerals in publications) require writing new style dates with Arabic numerals but old-style dates with Chinese characters. The use of Arabic numerals is considered overly casual for old-style dates.
In Taiwan it is common to see Arabic numerals in new-style dates, though Chinese characters sometimes appear in these. Chinese characters are normally used for old-style dates. The calendar year in Taiwan is determined, according to the Kuomintang refugee custom, from the founding of their Republic of China government in 1912.
Notes and references
- ^ a b Death warrant of Charles I web page of the UK National Archives.A demonstration of New Style meaning Julian calendar with a start of year adjustment.
- ^ The October (November) Revolution Britannica encyclopaedia, A demonstration of New Style meaning the Gregorian calendar.
- ^ Stockton, J.R. Date Miscellany I: The Old and New Styles "The terms 'Old Style' and 'New Style' are now commonly used for both the 'Start of Year' and 'Leap Year' [(Gregorian calendar)] changes (England & Wales: both in 1752; Scotland: 1600, 1752). I believe that, properly and historically, the 'Styles' really refer only to the 'Start of Year' change (from March 25th to January 1); and that the 'Leap Year' change should be described as the change from Julian to Gregorian."
- ^ a b c Spathaky, Mike Old Style New Style dates and the change to the Gregorian calendar. "increasingly parish registers, in addition to a new year heading after 24th March showing, for example '1733', had another heading at the end of the following December indicating '1733/4'. This showed where the New Style 1734 started even though the Old Style 1733 continued until 24th March. .. We as historians have no excuse for creating ambiguity and must keep to the notation described above in one of its forms. It is no good writing simply 20th January 1745, for a reader is left wondering whether we have used the Old or the New Style reckoning. The date should either be written 20th January 1745 O.S. (if indeed it was Old Style) or as 20th January 1745/6. The hyphen (1745-6) is best avoided as it can be interpreted as indicating a period of time."
- ^ Old Style New Style dates and the change to the Gregorian calendar GENUKI - UK and Ireland Genealogy
- ^ a b Lenz, Rudolf; Uwe Bredehorn, Marek Winiarczyk (2002). Abkürzungen aus Personalschriften des XVI. bis XVIII. Jahrhunderts (3 ed.). Franz Steiner Verlag. p. 210. ISBN 3515081526.
- ^ Nørby, Toke. The Perpetual Calendar: What about England Version 29 February 2000
- ^ "House of Commons Journal Volume 8, 9 June 1660 (Regicides)". British History Online. http://www.british-history.ac.uk/report.asp?compid=26211#s5. Retrieved 18 March 2007.
- ^ Tuesday 31 December 1661, Pepys Diary "I sat down to end my journell for this year, .."
- ^ Spathaky, Mike Old Style New Style dates and the change to the Gregorian calendar. "An oblique stroke is by far the most usual indicator, but sometimes the alternative final figures of the year are written above and below a horizontal line, as in a fraction (a form which cannot easily be reproduced here in ASCII text). Very occasionally a hyphen is used, as 1733-34."
- ^ A Julian leap year is every year divisible by 4. A Gregorian leap year is a year exactly divisible by 4 but not by 100 unless it is exactly divisible by 400. So 1600 and 2000 were leap years under both calendars, but the other centuries (e.g. 1700, 1800, 1900) were leap years under the Julian calendar but not the Gregorian calendar. The Gregorian calendar did not exist until 1582. The extension of the Gregorian calendar before 1582 is called the Proleptic Gregorian calendar, in which the years 400, 800, and 1200 are leap years but other century years are not.
- ^ See Cal (Unix)#Features and the Oracle Solaris manual: "An unusual calendar is printed for September 1752. That is the month 11 days were skipped to make up for lack of leap year adjustments".
- ^ "Russia: The October (November) Revolution". Encyclopædia Britannica Online. 2007. http://www.britannica.com/eb/article-38556/Russia. Retrieved 18 March 2007.
- ^ Today in Literature
- ^ Lord Robertson (2000). "Prospects for NATO–Russian relations" (.pdf). NATO. http://www.nato.int/docu/articles/2000/a000501a.pdf. Retrieved 19 March 2007.
- ^ Chandler, David G (1 March 1973). "From the Rhine to the Danube". The Campaigns of Napoleon. New York: Scribner. pp. 383. ISBN 0025236601.
- ^ Stutterheim, Karl; Pine-Coffin, John (trans.) (1807). A Detailed Account of The Battle of Austerlitz. London: Goddard. pp. 44. http://books.google.com/books?id=KlNEAAAAIAAJ&printsec=frontcover&dq=battle+of+austerlitz#PRA1-PA44,M1.
- ^ Robert Goetz, 1805: Austerlitz: Napoleon and the Destruction of the Third Coalition (Greenhill Books, 2005)
- ^ John Baker. Why Bacon, Oxford and Other's Weren't Shakespeare use this quote by Benjamin Woolley and cites The Queen's Conjurer, The Science and Magic of Dr. John Dee, Adviser to Queen Elizabeth I, page 173.
- ^ monticello.org on old style calendar
- ^ "The Japanese Calendar History". National Diet Library, Japan. 2002. http://www.ndl.go.jp/koyomi/e/history/02_index2.html. Retrieved 19 March 2007.
- ^ Andrei Lankov (6 February 2005). "The Dawn of Modern Korea (266) Lunar Calendar". The Korea Times. http://times.hankooki.com/lpage/opinion/200502/kt2005020616470454130.htm. Retrieved 19 March 2007.
- Details of conversion for many countries
- Side-by-side Old style–New style reference
- Time to Take Note: The 1752 Calendar Change from Ancestry.com
- Calendar Converter Date converter for many systems, from John Walker
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