Laurence Dixon ‘Why Change a Calendar? - Which year did Bede think he lived in?’ Article from Chronology & Catastrophism REVIEW 2010 (Production: Val Pearce) © Society for Interdisciplinary Studies, UK. NOTES Any errors found post-publication of the original article will have been noted in a subsequent issue of Chronology & Catastrophism REVIEW and as far as possible such errors (and any other errors found) will have been corrected in this PDF edition. Original formatting style and layout has been retained. Page numbers are those in the original article VJP - 25.6.2012 Why Change a Calendar? - Which year did Bede think he lived in? by Laurence Dixon One of the reasons that chronology is difficult and interesting, is that our forefathers frequently changed the dating system which they used to record their past and present activities. In this paper I will consider briefly those changes made in the last 1,400 years, when the changes were made, and provide the possible reason for each. I will work backwards to end with a consideration of the time of Bede. As we will see, changes to the calendar system have occurred frequently. In AD 1800 most regions of the world had their own calendar and the Gregorian system was only in use in Europe, America and their colonies. In contrast by 2000 that calendar had been adopted in most countries throughout the world. Why? Because international trade was by then global in nature and using a single calendar made trade accounts simpler. Even so many countries retained their traditional system for other purposes. In AD 1800 the Gregorian dates were quoted as Anno Domini (AD), celebrating the birth of Jesus Christ, but as the system is now used by non-Christians, too, by AD 2000 it was advocated that this be changed to Common Era (CE). However the AD symbol is retained in Britain. The Jews still use their Anno Mundi system in which 2000 CE is AM 5761, and the Moslems use their Anno Hegirae (AH) calendar in which AH 1 starts on July 16th 622 CE. The Hindus use many different calendar systems. Dershowitz and Reinbold [1] state that 30 are in active use and that though an attempt has been made recently to unify and revise them to be similar to the Gregorian system, it has not been very successful. Therefore, he claimed to have reigned more than the 23 years normally given him and if he had reigned in earlier centuries this would have posed a difficult chronological problem, especially in those periods when only the year of the king’s reign was quoted. In Charles II’s case it is known he insisted that his reign started when his father was executed. This is usually ignored because charters from his reign are not commonly on display. Dershowitz and Reinbold also give details of the Maya and Aztec calendars of South America and the Persian, Chinese, Japanese, Korean and Vietnamese calendars from the Far East but these will not be discussed in this essay. These three recent examples of changes introduced for political reasons, illustrate that revolution, regal diktat and conquest could lead to changes in the calendar. Let us now consider the last major calendar change made partly for astronomical reasons. In this brief glance at the calendar systems in use today we have already identified one cause for a change in system, namely the needs of international trade. As we proceed we will identify three more reasons why calendars have been changed, namely politics, religion and astronomy. Recent Changes Made for Political Reasons In this section we will note three changes made for political reasons. In AD 1792 the French people overthrew their monarchy and created a republic. As they did not wish to retain anything that reminded them of their kings they completely changed the calendar. Each year contained twelve months of 30 days, each divided into 3 periods of 10 days, together with 5 or 6 extra days which were added to the end of each year. The system was abandoned by Napoleon in AD 1806. It was unusual in that most calendars had weeks of seven days, and did not disturb the days of the week when making other changes. In AD 1660 Charles II of England became king, he is known to have ruled until AD 1683, a reign of 23 years. My attention was recently drawn to a Royal Charter from his reign, it started: Chronology & Catastrophism REVIEW 2010 ‘Club Indenture Tripartite made the thirteenth day of April in the three and thirtieth year of the reign of our sovereign Lord Charles the Second by the grant of god of England, Scotland, France and Ireland King, Defender of the Faith, Anno Domini One Thousand six hundred eighty and one’. In the sixteenth century the Spanish conquered the Maya, Aztec and Inca empires in South America, destroyed the systems that maintained their calendars and imposed their own calendar. Conquered countries often, but not always, had to adopt the conquerors’ calendar. The Gregorian Calendar In AD 1582, Pope Gregory’s advisors decided that the Julian Calendar then in use was unsatisfactory [2], mainly due to the fact that the spring equinox was no longer taking place on March 21st, the date the experts at the Council of Nicaea in AD 325 had expected it to occur. The date of the spring equinox was easily determined by the scientific instruments then available and in AD 1582 it occurred on March 11th. This change in date was due to the fact that the length of the year was not precisely the 365.25 days assumed by the leap year structure which formed part of the Julian system. In this a leap year, with an extra day, occurred every four years, including each century year. Throughout history the number of days in a year has steadily declined. To correct this drift it was decreed that century years that were not divisible by 400 would no longer be leap years. So, in 1,200 years, there would be 300 leap years in the Julian calendar and 300 - 12 + 3 in the Gregorian. This formula is still in use, but does not reflect the current number of days in a year exactly. You may wonder whether it is the length of the year that is changing, or the length of the day. This was an unanswerable question until recently, when the second was redefined using the frequency of radiation from a Caesium 35 atom, so that whether the number of such seconds in a day was constant could then be determined, although I am unaware that such experiments have been performed. One reason that the date of the vernal equinox was important to the Christian community was that it was used to calculate the date of Easter. The Council of Nicaea in AD 325 agreed that Easter would be celebrated on the first Sunday after the first full moon occurring on or after the vernal equinox [3]. In the tables of the date of Easter prepared by Dionysius Exiguus in AD 532, it was assumed that the vernal equinox would always occur on March 21st [4]. When it varied this caused arguments about when Easter should be celebrated between those Christians who assumed that the vernal equinox occurred on March 21st and those who used instruments to observe when it in fact occurred. As the date of the vernal equinox had already changed in AD 1582, a second decree stated that Thursday October 4th AD 1582 (Julian) would be followed by Friday October 15th AD 1582 (Gregorian); a change of 11 days. A third change was also made at that time. The start of a New Year was changed from 25th March to 1st January. This restored a previous arrangement, made by the Council of Tours in AD 567, when they changed the start of the New Year from 1st January to the vernal equinox; intended at that time as 25th March [5]. Because the political relationships between the Protestant countries of Northern Europe and the Papacy were very strained at this time, the Protestants chose not to implement the change and England continued to use the Julian system until AD 1752. As a leap year had not occurred in AD 1700 (Gregorian), a 12 day period then had to be omitted. It is interesting to note that March 25th, the start of the New Year on the Julian calendar, became April 6th in the Gregorian system and that April 6th is still the start of the English tax year. The use of the Julian calendar in England, while France was using the Gregorian calendar, led to some unexpected complications. For instance Elizabeth Tudor, Queen of England, died on March 24th AD 1603 (Julian), but in France this date was April 4th AD 1604 (Gregorian). Most English history books still use Julian dates when discussing years before AD 1752. In AD 1917 the Russians still used the Julian calendar; the revolution that overthrew the Tsar occurred in October (Julian) but that date was in November on the Gregorian Calendar used in Western Europe. So the anniversary of the October revolution is celebrated in November. The Russians had adopted the Julian calendar when Tsar Peter, ‘the Great’, decreed that January 1st AM 7207 would henceforth be known as January 1st AD 1700. He also changed the date of the New Year from 1st September to 1st January. The simple formula for going from AD to AM dates, AM = AD + 5,507 years, is therefore only accurate for part of the year and is one year out for the rest. The AM calendar was introduced into Russia by Vladimir of Kiev when he converted to Christianity and this is usually said by modern scholars to have occurred in AD 988 (AM 6495). According to a letter in the publication Current World Archaeology [6], the AM date reflects the resettling of displaced inhabitants of Southern Ukraine after the flood of the Black Sea. 36 The Start of the Julian Calendar Let us consider when the Julian calendar might have come into use. Presumably when it was introduced the vernal equinox did occur on March 21st. Assuming that the Gregorian leap-year system would have been as accurate before AD 1582 as it has been since, we can apply the correction in reverse (all datesAD). This gives: March 22 (Gregorian) = March 11 (Julian) from 1500-1699 = March 12 1400-1499 = March 13 1300-1399 = March 14 1100-1299 = March 15 1000-1099 = March 16 900- 999 = March 17 700- 899 = March 18 600- 699 = March 19 500- 599 = March 20 300- 499 = March 21 200- 299 Therefore, we would expect that the equinox was on March 21st at some date between AD 200 and AD 299; two to three hundred years after the start of the Julian calendar. However, I have found two references to a calendar reform in this century, when the equinox was reset to March 21st. If days had to be omitted, as in AD 1582, we cannot retrocalculate Julian dates before AD 285. ‘[AD 285] Indiction 4 year 1, the second consulship of Diocletian Augustus and that of Aristobulus. The regnal years of Diocletian in the Easter Tables are determined from these consuls. (An important step was taken in the mid 3rd C by the Egyptian Anatolius, Bishop of Laodicea in Syria, who exploited a 19 year lunar cycle for the computation of Easter and probably produced a 95-year table (5 cycles) whose notional beginning was in 258. In order to place the equinox correctly on 21 March, a reform was undertaken at Alexandria in the early 4th C and the revised cycle was notionally begun either in 303 or one cycle earlier in 284; the latter coincided with the regnal years of Diocletian which were used for dating purposes especially in Egypt, where the new cycle was adopted).’ [7] The above era is known as the Diocletian era. In AD 1852, Greswell [8] asserted that he had proof that a calendar reform occurred in AD 225. It would have been feasible for the reform to have been introduced in different years in different parts of the Empire, which was in chaos for much of that century. If the year was the same length as the Gregorian year for the period we are considering, then March 21st (Gregorian), supposedly the vernal equinox, could not have occurred on March 21st (Julian) in AD 532, when Dionysius supposedly compiled his Easter tables. Dionysius’ date is incompatible with the calendar reform of AD 225. Possibly Dionysius did not observe the equinox himself and simply continued Anatolius’ Easter cycles. Now we will look at the calendar change immediately before Gregory’s. Chronology & Catastrophism REVIEW 2010 The Reform of Nicephorus Gregares AD 1333. A Political Reform. Leaving aside the last sentence, we note that from AM 6248-6232 is 16 years. After the recovery of Constantinople by the Byzantines, in AD 1261 efforts were made to reconcile the Greek and Roman-Christian religions, chronologies etc. In these negotiations, Nicephorus took a leading role on the Greek side. He was born in AD 1283 and rose to be the archivist in the court at Constantinople; leading the negotiations in AD 1333. He died in AD 1360. Alexander del Mar [9] claims that one point at issue was that the Romans claimed Christ was born 15 years before the Greeks had determined it. At this time the Romans used an AD calendar and the Greeks used an Anno Mundi calendar, but of course they ‘knew’ the AM date of the birth of Christ in their system. The year AD 1333 after the birth of Christ on the Roman calendar, was only 1,318 years after the birth of Christ according to the Greek system. Del Mar claimed that Nicephorus made the dates agree by adding 15 years in the Greek system, by arbitrarily changing the reign lengths of certain emperors before Justin II to achieve this. Del Mar claimed that the Latins had already added 15 years centuries before. The Chronicle of Theophanes is our main source for eastern history from AD 603 – 813, but Turtledove, the translator, commented that Theophanes mainly used AM dates and that he, Turtledove, had added the corresponding AD dates by subtracting 5492/3 from the AM dates. However, where Theophanes himself gave AD dates they differed and should be ignored [13]. To get to Theophanes’ AD dates you need to subtract 5,500, so Theophanes’ own system is AM = AD + 5,500. An example is AM 6095 (Theophanes) = AD 603 (Turtledove) = AD 595 (Theophanes). Victorian historians, like Turtledove, who assumed they could correct AM dates, may have misled generations. On p. 203, del Mar quotes Nicephorus as stating that Justin II died in AD 578 on the Roman Fasti system; and in AM 6098, which equalled AD 593 in Nicephorus’ own system, after he had added 15 years. However, modern scholarship states that Justin II did indeed die in AD 578! So it appears that Nicephorus’ reforms were only temporary. Nicephorus’ new relationship was AM = AD + 5505/6. If he added 15 years to both the AM and AD dates then the formula linking them would have been unaltered, but there would have been a gap of 15 years in Byzantine history around AM 6839. Nicephorus did write a history of the Romans [10] covering the period AD 1222-1351 and whether or not he had made the modification that del Mar claimed, he wrote it as a seamless history with no gap. Unfortunately, his history does not appear to have been translated into English. A search on the web located online Greek and Latin versions, as well as references to early 19th century translations into French and German. Probably the only place where we might find verifying evidence that Nicephorus’ made reforms would be in a contemporary chronicle relating the details of the Crusaders’ occupation of Constantinople. The Chronicle of Theophanes, AD 813. Politics Again Before the time of Nicephorus, Theophanes wrote a chronicle. Harry Turtledove translated the Chronicle of Theophanes into English in 1982 [11] and used an AM system. The Chronicle ended in AM 6305 with the start of the reign of Leo V, which Turtledove and other modern scholars date to AD 813. Subtracting the dates gives AM = AD + 5,492, which is known as the Alexandrian AM system. Under year AM 6232 Theophanes states: ‘According to the Romans, [that is Constantinople] this year was 6248 years after the creation of the world [from the time of Adam]; according to the Egyptians [that is the Alexandrians] 6232. It was 1063 years after Philip of Macedon.’ [12] Chronology & Catastrophism REVIEW 2010 Two examples of Theophanes’ headings (below) illustrate the details he quoted. Annus Mundi 6095 (602-603) AD 595 Annus Mundi 6268 (775-776) AD 768 Roman Emperor Phokas (7 yrs: yr 1) Persian King Khosroes (39 yrs: yr 15) Bishop of Constantinople Kyriakos (11 yrs: yr 9) Bishop of Jerusalem Isaac (8 yrs: yr 3) Roman Emperor Leo (5 yrs: yr 1) Arab ruler Mahdi (9 yrs: yr 1) Bishop of Rome Hadrian: (27 yrs: yr 7) Bishop of Constantinople Niketas (14 yrs: yr 11) Bishop of Alexandria Eulogios (27 yrs: yr 24) Bishop of Antioch Anastasios (9 yrs: yr 3) Under AM 6255, (Turtledove AD 763), Theophanes states that it was so cold in October that the north shore of the Black Sea froze to a depth of 30 cubits 100 miles out and, as the snow kept falling, the depth increased another 20 cubits, so that the sea became dry land. When it began to melt in February icebergs formed and damaged the gates of the harbour of Constantinople. It must have been an exceptionally cold spell. Two reforms occurred about AD 1079 Del Mar [14] reported that Omar Kayyam reformed the Persian calendar in AD 1079. At about the same time the Armenians, who had used the Buddhist Divine Cycle of 552 years, changed to the Dionysian 532 year cycle, bringing the end of the cycle forward from AD 1104 to AD 1084. The Venerable Bede AD 672-735? A Mystery Bede was a monk at the Northumberland monastery of St Peter at Monkwearmouth, now within Sunderland. He was a theologian, historian and chronologist and wrote over 60 books. His most famous book is his Historia Ecclesiastica Gentis Anglorium, (Ecclesial History of the English People) [15]. When he attempted to date past events he was faced with a difficult situation, as traders came to Jarrow from both the eastern empire and from western rulers, bringing their chronological systems with them (including conflicting Anno Mundi systems and conflicting records of past emperors’ reigns). In AD 703 he wrote De Temporibus [16], a short work containing 15 pages, and included in it his own independent Anno Mundi system. Anno Mundi systems were meant to start at the biblical creation of the world and many chroniclers attempted the task of adding up the years given in the Old Testament, but then switched to the chronologies of the Persian and following Ptolemaic dynasties in Egypt to 37 determine the number of years that had passed between the creation and their own time. Unfortunately, they all obtained different answers. Confused, Bede did the sum for himself and obtained yet another value. The Anno Mundi system in use in western Europe was the system proposed by Eusebius of Caesarea [17] in his Chronicon, published in about AD 325. Bede states that Eusebius did not include dates in the Chronicon, but added up the years of the lives of fathers before their eldest child was born, as recorded in the Septuagint Bible. He obtained the figure 5,199 years from the creation of the world to the birth of Christ. His system was used by a series of western Christian chroniclers for over 1,000 years. The Anno Mundi system, popular in the eastern empire, was based on the belief that the phrase ‘one day is with the Lord as a thousand years and a thousand years as one day’ meant that, since it is said in Genesis that the world had been created in six days, it would end 6,000 years after it was created. Again, it was assumed that the Messiah would be born in the last hour and, since an hour was one twelth part of the day, it was decided the Messiah would be born 5,500 years after the creation, giving AM = AD + 5,500. This system is often credited to Hippolytus (c. AD 235). In this system the 16th year of Tiberius was dated AM 5531. As we have seen, this system was still used by Theophanes. It had, however, been revised first by Annianus, a monk in Alexandria, working under their Arch Bishop, Theoplitius, who introduced the formula AM = AD + 5,493 in Alexandria in about AD 412. This was the system Turtledove used in altering the AD dates in Theophanes. The system was revised again at the Quinisext Council called by Justinian II in about AD 692, who ruled that henceforth AM = AD +5,509 should be used in Constantinople. Bede had to decide which system to use and decided to do the arithmetic himself. In contrast to Eusebius’ use of the Septuagint Old Testament, Bede used the Latin Old Testament as translated by Jerome and obtained 3,952 years for the time between Adam and Christ. When this appeared in De Temporibus he was accused of heresy, but wrote a letter [18] to Plegwin explaining how both Eusebius’ and his own figures were reached. It was essentially a difference in the length of the second ‘age’ from Noah to Abraham. The reason for the change in system was purely religious. As both the Septuagint and the Latin Bible are extant, anyone can do the sums and check their arithmetic. Bede defeated the charge of heresy and his AM system was used to date church buildings in England for at least 600 years. It surprised me to learn that the Jewish rabbis got a slightly different total to Bede (in AD 2000 they were in AM 5760) implying a difference of 192 years from Bede. Part of the difference occurs because the Jews allocate a mere 52 years for the Persian period of their history, despite the fact that Cyrus II is separated from Alexander by 206 years, according to modern historians. In De Temporibus, which modern scholars claim was published in AD 703, Bede included his Chronica Minora, a list of Emperors and the length of their reigns continuing to the end of Leo I, and simple summation within the text gives 712 years from the birth of Christ. So, when Bede published this book, he obviously must have thought he was living after 38 AD 712 and not in AD 703. Then, according to modern scholars, 22 years later in AD 725 he wrote De Temporus Ratione and included his Chronica Majora in chapter 66, which also lists the lengths of the reigns of the Roman Emperors. It should be stressed that the Chronica Minora contains no AD or AM dates; it simply lists the length of reigns of recognised Roman and eastern emperors. In contrast, the Majora also gives the AM (Bede) date for the end of each reign and a short description of the major events that occurred. Victorian editors, Mommsen and Migne, added summary tables which often do not agree with the numbers in the Latin scripts; I have chosen to ignore their modifications. Adding the reign lengths in both Chronica agree that from the start of Tiberius to the end of Justin II is 563 years, to which Christians would add 15 years in order to reach the date of the birth of Christ, giving AD 578. According to del Mar, Nicephorus also had AD 578 before he made his modification and changed it to 593 AD (because he inserted his modifications before the reign of Justin II. His date should be ignored). The agreement between the first three figures inspires confidence, until it is noticed that earlier individual reigns are as much as 5 years different, when it then looks contrived. Justin II is the last reign detailed by del Mar from Nicephorus. The Chronica Majora continues past the end of the Minora (which ends with Leo III, whose reign ends in AD 712 in the Minora and AD 700 in the Majora), up to the end of the reign of Leo ‘IIII’ [IV] which, by simple arithmetic, makes AD 728. Bede obviously changed his mind about the date in which he was living after publishing the first book. His two dates for Leo I are 12 years apart, the difference being mainly located in the reigns of Heraclius, which he quotes as 36 and 25 years long respectively. Obviously De Temporibus must have been published after the last event mentioned in it. On a straight summation of the years since the birth of Christ that Bede lists within it, the last event occurred 712 years later than Christ’s birth, yet modern scholars date the publication to AD 703. In De Temporus Ratione dated by modern scholars to AD 721, Bede included his own retro-calculated AD dates, which differ from the sum in De Temporibus. Possibly, a Pope commissioned Bede to write his second history and provided him with papal correspondence in order to improve his dates, but while AD dates in this paper after about AD 750 can be used to calculate the number of years before today, no AD date quoted earlier than AD 750 should be assumed to be precise. As we have seen, the time of Bede’s life was also covered by Theophanes. However, he states that Herakleios reigned for 31 years, his son Constantine III reigned for 4 months, and another son Heraklonas reigned for 6 months, before Constantine IV son of Constantine III came to the throne and reigned for 27 years. Theophanes dates the end of the reign of Leo III to AM 6232 (and subtracting 5,500 this is AD732, not AD 728 as given by Bede, nor AD 741 as implied by Turtledove). Herakleios’ father had ruled the African provinces before being summoned to Constantinople to expel the emperor Phokas, when he sent his son in response. In the younger Herakleios’ first 12 years, the Persians took more and more of the Asian empire. Then, in years 12 to 18, Herakleios succeeded in recovering the provinces, but the wars reduced both armies and in his 23rd year the Arab armies began to sweep over the Asian provinces, Persia and Chronology & Catastrophism REVIEW 2010 Africa. Herakleios died of dropsy in year 31 and Umar began to build the mosque in Jerusalem in year 2 of Constans. This was obviously a disastrous period for the eastern Empire and the chronology is in a mess at this time. The reign of Herakleios is given 3 different lengths (36 yrs, 31 yrs and 25 yrs in the three chronicles we have considered). Turtledove dates the end of Leo II in AD 698, in agreement with the Chronica Majora, while Theophanes dated it at AD 691 and the Minora to AD 712. Speculating, it appears at first glance that Bede made a mistake in his first book, but it cannot be that simple, because when he wrote it he must have believed he was living after AD 712, so that must have been the AD date in use in Jarrow. Accepting that his information and his AD date had been wrong, he was commissioned to write his new history and did so using his new calendar, but he must have known how many years he had lived between writing his two histories. Was it 22 years or 13, or was Theophanes correct and it was somewhere in between? Theophanes, of course, lived about 100 years after the events he was recording, but Turtledove [19] suggests that Theophanes probably used the chronicle of the earlier Nikephorus, whose Historia Syntomos covers the period AD 602-769. A brief glance at the translation shows that Nikephorus includes no AD or AM dates. Cyril Mango [20], the translator, in his ‘Introduction’, draws attention to a curious hiatus in both Theophanes’ and Nikephorus’ discussion of events in Constantinople after AD 720 (Mango’s date for the coronation of Constantine V, Theophanes gives as AD 733). Theophanes also mentions events in Constantinople in AD 727 (Turtledove) when there was a volcanic eruption in the sea near Thera. As the Arab advance through France was only halted at Tours by Charles Martel in AD 731, Northumberland may well have seemed to the Pope to be the most secure and prosperous Christian land at that time and the safest place in which to write the official chronicle. that he was, this history is seamless and gives no hint that he ever had any doubts. Modern historians also write seamless histories and ignore these difficult changes. Conclusion In this paper I have looked at calendar changes since the time of Bede. Calendar changes due to considerations of commerce, religion, politics and astronomy have occurred in the centuries since Bede and I have attempted to explain them. However, at this point in time, the calendar changes reflected in the early 700s (AD) by the differences between Bede’s two histories and Theophanes’ chronicle remain a mystery, which I hope to solve in another paper. Notes and references 1. N. Dershowitz and E. Reingold, Calendrical Calculations. CUP, 2008, p. 275. 2. Ibid p. 47. 3. Ibid p. 113. 4. Ibid p. 114. 5. J. Wilson, ‘It’s Another /holidays/newyear/1997. New Year’. http://www.wilstar.com. 6. I. Nasaduke, ‘Counting Time’. Current World Archaeology, 36, August 2009, pp. 6-7. 7. M. Whitby & M Whitby, translators of Chronicon Paschale. Liverpool University Press, 1990, pp. 284-628. 8. E. Greswel, Origines Kalendariae Hellenicae, Vol. 6. 1862, p. 443. 9. A. del Mar, The Worship of Augustus Caesar. California, 1899. Reprinted 1976, p. 68. 10. Nicephorus (c. 1333), History of the Romans. 11. Theophanes (c. 815), Chronographia. Translated by H. Turtledove. 1982; The Chronicle of Theophanes Anni Mundi 6095-6305. Pennsylvania University Press. 12. Ibid, p. 103-105. 13. Ibid, p. xvi. Under the heading AM 6247, Theophanes states: ‘The Emperor Constantine resettled in Thrace the Syrians and Armenians …. . In the same way he brought men and their families from the islands, Greece and the southerly regions because there were few property owners in the city. He had them settle there, thickly studding it with them.’ The times had obviously been devastating. So, when precisely did Bede think he was living in the interval between writing his two books? After Bede had written De Temporus Ratione (AD 725), he wrote his famous Ecclesiastical History of the English People (AD 731). This is famous as the first history written using the AD system. After dating Julius Caesar and Augustus using the calendar dating from the foundation of Rome (AUC), he listed the events in the Emperors’ reigns using AD dates from Marcus Antonius Verus in AD 156 until the reign of Mauricius in AD 582, at which point he ceased to refer to Roman Emperors and switched to Pope Gregory, who sent Augustine to Kent. With the Roman Church established in the Anglo-Saxon kingdoms he related their history using AD dates until AD 725. As the skilled narrator Chronology & Catastrophism REVIEW 2010 14. Del Mar, op. cit., p. 269. 15. Bede (c. 731), Ecclesiastical History of the English People. Translated by B. Colngrove and R.A.B. Mynors. OUP, 1969. 16. Bede (c. 703), De Temporibus. A Latin version of the full book is available in Giles’ Complete works of Bede. The Chronica Minora is available on the MGH website http://www.mgh.de/dmgh. 17. Eusebius (c. 325). The Ecclesiastical History of Eusebius Pamphilius, translated by C. F. Cruse. Bell and Daldy, London, 1868. 18. F. Wallis, Bede, The Reckoning of Time. Liverpool University Press. 1999, pp. 405-416, which includes translations of: Bede (c. 725), De Temporus Ratione and Bede (c. 704), Letter to Plegwin. 19. H. Turtedove op. cit. p. xvi 20. Nikephorus (c. 769), Historia Syntomos; Nikephorus’ Short History. Washington. Translated by C. Mango, 1990. _____________________________________________________________ Acknowledgements - This essay could not have been written without considerable help from Trevor Palmer and Steve Mitchell, but the views reflected in this paper are my own views and are quite different from theirs. 39
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