Like the other Mesoamerican cultures, the Aztec rituals and ceremonies were governed by their sacred calendars. By far, the most important festival of all in the Aztec ritual calendar was the New Fire Ceremony, which was celebrated every 52 years when a “calendar round” was completed i.e. the 260-day sacred calendar (tonalpohualli) coincided with the 365-day solar calendar (xiuhpohualli).
The New Fire Ceremony
The Aztecs believed that the end of a 52-year cycle was a time of planetary instability, when our world could easily come to an end due to fire, floods, earthquakes or wind. That’s why the New Fire Ceremony was celebrated with much enthusiasm and rigor, in order to stave off the end of the world and ensure that the sun rises another day.
The cycle of 52 years was known as xiuhmolpilli or “binding of years” and was symbolized by a bundle consisting of 52 wooden sticks tied with a rope, each stick denoting one year. During the New Fire ceremony, the bundles of a just completed cycle were burned and their stone replicas were buried.
In the book, Stories told by the Aztecs before the Spaniards came (1970), Carleton Beals paints a vivid imagery of the New Fire ceremonial rites followed by the Aztecs.[1] The celebrations began 12 days before the end of the 52-year cycle.[2]
"Holy fires, kept lit during the entire 52 years, were extinguished. All other fires were also extinguished...The people also destroyed their most treasured possessions. They tore their clothes and broke their furniture and utensils. Even gods and idols were hurled into the rivers and the lakes. Everything must be replaced by new objects.
Extreme anxiety ruled on the critical night. No one thought of sleeping. The sun might never rise again! And if the sun did not rise, terrible hideous figures, called Tzitzimime, the Sky Spirits, would descend upon earth and devour the people...
The priests, dressed in the insignia of all the gods, marched in silent procession towards the outskirts of the city to Ixtapalapan, Place-of-Salt-Works, five miles distant from Tenochtitlan, a hill with a twisted summit, the Hill of the Star.
All the inhabitants also walked out to the sacred hill. In distant villages the people went to the nearest elevations and mountains to get a view of the Sacred Hill of the Star, to watch for the reappearance of the divine flame, the New Fire.
On the summit of the Sacred Hill, the priests waited until the Pleiades reached the exact zenith. On the open breast of a sacrificed victim, the priests placed the mamalhuaztli (fire drill) the sticks with which New Fire was made. The appointed priest twirled the hard stick with great energy. The multitude below waited in fearful expectation. The most restless were those on the far-off hills. The priest, sweating and panting, worked until the softer wood powdered, smoked, took fire...
From the soft burning wood of the mamalhuaztli was lit an immense bonfire there on the summit. As the flame leapt up in the dark night the people on the mountains in far towns danced and hugged each other, crying and laughing. People drew blood from their ears with thorns and threw it in the direction of the blessed New Fire.
Messengers quickly carried it by lit ocotli pine torches to the four cardinal points... Racing down the hillsides, careful not to let the flames go out, these runners passed the precious fire from hand to hand until, in an incredibly short time, it was distributed to all the hamlets of the land. One by one the hearth fires and the altars were relit. Once more comforting shadows danced along the walls.
Life was renewed! Life was assured for another 52 years! In every house there was a festival, music and dancing and drinking, and the people ate tzoalli, the Bread of Joy. New hopes flowered. Everything, clothes, furniture, idols, utensils were new. Life had begun again!"
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| Figure 1: Mural by Diego Rivera of the Aztec city of Tenochtitlan, at the Palacio Nacional, Mexico City, 1945. Source: Public Domain Image from Wikimedia Commons. |
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| Figure 2: Representation of a New Fire Ceremony in the Codex Borbonicus. Source: Public Domain Image from Wikimedia Commons. |
Ever since the time I had first become aware of the Aztec New Fire Ceremony, I was puzzled by its astronomical implications. Why did the Aztec priests wait for the midnight zenith passage of the Pleiades before lighting the New Fire? Why was this so important? I had no idea, nor could I find a reasonable explanation from anywhere else.
The other thing that intrigued me was the obsessive fear that Aztecs had that, if the New Fire was not successfully lighted, the dangerous “sky spirits”, called Tzitzimime would descend upon earth and devour all the people. Who were these terrifying “star demons” of darkness, armed with sharp knives, who seemed to be patiently waiting for a chance to kill off the Aztecs? I never found a satisfactory answer to this question either.
The Taurid Meteor Showers
Quite unexpectedly, I received a clue to the puzzle from Robert Mahoney Welch - a friend on Facebook who is an avid researcher into the ancient mysteries. Robert had read an article written by me where I had proposed that the end of the last Ice Age was, in all likelihood, caused by the passage of the earth through the Taurid Resonant Swarm – a densely packed swarm of comets and meteors circulating within the Taurid meteor stream, which was formed by the gradual fragmentation of the parent comet that created the stream.
Robert said that he believed that Aztec New Fire Ceremony was devised for the purpose of tracking impacts from the Taurid Resonant Swarm. He said that the Aztecs knew that the earth’s orbit intersected the Taurid swarm every 52 years, and that is when the chances of impact go up significantly. The “star demons” called Tzitzimime that descended from the sky was a metaphor for the blazing meteors that caused loss of life. He further contended that, as per the Codex Chimalpopoca, in the year 1454 AD - which was the end of a 52-year cycle - there was a “Rain of Fire” and “Frost Killed the Corn”. The event has been confirmed by “tree ring chronologies,” he claimed. Robert interpreted this as a Tunguska level event that struck the Aztecs.
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| Figure 3: The Taurid Resonant Swarm of comets within the Taurid meteor stream. Source: SkyandTelescope.com, Image Credit David Clark, University of Western Ontario |
Needless to say, I found Robert’s thesis very interesting and persuasive, and almost immediately a number of thoughts went through my mind. His belief that the Aztecs were tracking impacts from the Taurid Resonant Swarm perfectly explains the timing and astronomy of the New Fire Ceremony.
It clarifies why the Aztec priests were tracking the movement of the Pleiades star cluster at night. That’s because the Northern Taurid meteor stream has its radiant near Pleiades i.e. the Taurid meteors appear to radiate from a point in the sky very close to the Pleiades star cluster.
Apparently, the Aztec priests were waiting to see if any large meteors radiate from the Pleiades, and if none were seen by midnight, when the Pleiades reached the zenith above Tenochtitlan, they knew that the danger was over, and the New Fire could be lighted.
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| Figure 4: The radiant for the meteors of the Northern Taurid is near the Pleiades. Credit: Bibhu Dev Misra. |
The timing of the New Fire Ceremony backs up this idea to the hilt. While it was known that the New Fire Ceremony used to be celebrated in the month of November – which is also the month when we experience the peak Taurid showers – some scholars have proposed specific dates. Arnold Lebeuf and Stanislaw Iwaniszewsk wrote in their paper that that New Fire Ceremony was probably celebrated on Nov 14 or Nov 16.
“Broda (1982) established that the midnight transit passage took place around 16 of November...Krupp ( 1982) calculated that in AD 1500 at the latitude of Huixachiecatl where the last ceremony was performed, the Pleiades midnight passage happened on November 14.”[3]
Since the New Fire ceremonial rites began 12 days before the end date of the 52-year cycle, we can surmise that the New Fire Ceremony took place from November 2 to 14 or from November 4 to 16. Either way, it overlaps with the peak dates of the Taurid meteor showers which generally extends from November 5 to 12!
The Taurids are actually split into two showers - the Northern Taurids and the Southern Taurids. They are two parts of the same stream of cometary debris. While the Southern Taurids peak around November 5, the Northern Taurids peak around 12 November. So, it is during a one week period between November 5 and 12 when the showers overlap that one has the highest chances of seeing a Taurid fireball.
It's no coincidence that the Aztec New Fire Ceremony overlaps perfectly with the peak dates of the Taurid meteor shower. This was done intentionally, and with adequate reason. These were the days when the chances of getting impacted by the Taurid meteors were the highest, which the Aztecs metaphorically described as the “star demons” Tzitzimime descending to the earth to devour humans.
That is why there was so much fear throughout the 12 days of the ceremony, why people fasted and did penance, and why all the fires in the city were extinguished – almost as if they were trying to hide from the terrible “star demons”.
On November 14 or 16, when the peak dates of the shower had passed, the Aztec priest carefully observed the Pleiades – the radiant point of the Taurid meteors - cross the zenith at midnight and concluded that the threat of bombardment was now over. Then he lighted the New Fire, which was carried to the farthest reaches of the empire. Life and civilization was assured for another 52 years.
It is obvious that the New Fire Ceremony was intrinsically tied to the peak dates of the Taurid shower, and was meant for the purpose of tracking impacts originating from this meteor stream.
The question is, why did the Aztecs think that there was a high probability that they might get struck by the Taurid meteors at the end of a 52-year cycle? This is where we need to learn a bit more about the Taurid Resonant Swarm.
Astronomers Clube, Napier, Steele and others have computed that the earth passes through the dead center of the Taurid Resonant Swarm once every 2500 to 3000 years. That is when there is a high chance of getting bombarded by large meteoroids and comets that can cause catastrophic damage and civilizational collapse.
However, even when we have “close brushes” with the swarm, we experience enhanced fireball activity. One such year was 2015. This is what I had written in Yuga Shift as to what happened that year:
“In 2015, the center of the Taurid swarm passed close to us. A team of European astronomers recorded over 140 fireballs shooting through the earth’s atmosphere in November. The team also found evidence that the Taurid swarm contains two objects around 200 to 300 meters across - far more massive than the Tunguska meteor. Reporting their findings in the journal “Astronomy and Astrophysics” in 2017, the team said that the risk of impacts from such large-sized meteoroids makes detailed observation of the Taurid Resonant Swarm extremely important [4]."
The Aztecs had probably noticed that the chances of a close brush with the Taurid Resonant Swarm - resulting in an increase in fireball and impact events - tends to peak every 52 years. Which is why they instituted their elaborate rituals to ward off this potential evil.
There is another very good reason for their anxiety and panic during the time of the New Fire Ceremony. Data shows that Aztecs experienced droughts and famines at the close of every 52-year cycle!
In a paper titled, “Aztec Drought and the “Curse of One Rabbit””, the authors, Therrell, Stahle and Acuna Soto, compiled a large body of evidence from numerous Aztec codices and tree-ring chronologies which indicate that the ending of a 52-year cycle was almost always associated with extreme droughts and environmental misfortunes, including “darkening of the sun” and a “rain of ash”.[5]
The Curse of “1 Rabbit”
As per the Aztecs, the era of the Fifth Sun had started in the year “1 Rabbit” with the restoration of the earth and sky. “1 Rabbit” was the first year of the Fifth Sun and, therefore, the first year of each 52-year cycle.
When Mesoamerican scholars, Therrell, Stahle and Acuna Soto, looked into the major Aztec codices and historical annals, they identified 13 drought years in seven separate episodes from 1332 through 1558.
What is of special importance to us in the context of the New Fire Ceremony is this: the final three “1 Rabbit” years of the Aztec times – viz. 1454, 1506 and 1558 – were characterized by severe droughts and environmental calamities in the Aztec city-states.
On comparing this information with the “tree-ring chronologies” from central and northern Mexico, the authors noted that, of the 13 drought years in the codices, 9 were also years of below-average tree growth, indicative of drought and below-normal crop production. In case of the three “1 Rabbit” years mentioned above, this is what they found: the tree-ring values were below normal in 1454, above normal in 1506, and below normal in 1557 (i.e. the year preceding 1558).
Let’s look at a few details. The famine of the “1 Rabbit” year in 1454 is, by far, the most widely reported calamity in Aztec history, which attests to its severity. The chronicler Fray Diego Durán states that the drought was so bad that, “the springs dried up, the streams and rivers ceased to run, the earth burned like fire... As soon as the maize sprouted it turned yellow and withered like all the rest of the crops.”
The drought and hunger appears to have started in 1452, or even earlier, and ended in 1455. The Codex en Cruz depicts a blackened sun from which a shower of dust or ash fell upon the maize crops in the year 1453. The Anales de Tlatelolco describes a killing autumn frost in the same year. Codex Telleriano-Remensis depicts disastrous dust storms and dead victims of the famine in the year 1454. In the Codex Chimalpopoca, the writer states, “At this time the people were one-rabbited…”
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| Figure 5: A page from Codex Telleriano-Remensis depicts dust clouds and dead bodies during the drought of 1454. Source: Public Domain Image from Wikimedia Commons. |
What could have brought about these calamitous conditions? Scholars generally speculate about volcanic eruptions, but a far more likely cause – given what we know about the New Fire Ceremony - would be a combination of a Super El Nino and an intense Taurid meteor shower characterized by the incursion of meteor dust, meteor airbursts and localized impact events. The meteor dust from these events could have blocked out the sun, killed the crops and led to the autumn frost.
The Aztec codices indicate that the drought of the “1 Rabbit” year in 1506 had begun a few years earlier in 1502. The images for 1505 in the Codex Telleriano-Remensis, “repeats a tale of famine, starvation, and death similar to that which occurred during the reign of the first Moctezuma, one cycle (fifty-two years) earlier.”
Once again there was a famine in the first “1 Rabbit” year of the Colonial Era in l558, following the conquest of the Aztecs by the Conquistadors. An annotation in the Codex Telleriano-Remensis states: “In this year one rabbit [1 Rabbit], if one looks carefully at this count, it will always be seen that in this year [1 Rabbit] there was famine and death. . . . And thus they consider this year as a great omen, for it always falls on one rabbit.”
Evidently, the historical annals indicate that the “1-Rabbit” years were inevitably associated with famine. The authors in the study found that, “13 One Rabbit years between A.D. 882 and 1558 are covered by the available tree-ring data. Ten of these years were immediately preceded by below normal tree growth.”
Interestingly, the authors did not detect any significant relationship between the eight "1 Rabbit" years and tree-ring values after 1558. This led them to surmise that the curse of the “1 Rabbit” year had ended with the collapse of the Aztec empire. Since the making of the codices had also ceased after the Aztecs, corresponding historical data is not available for cross-checking.
But can we be confident that the curse of “1 Rabbit” has been well and truly lifted? After all, tree-ring values are not always conclusive, and it is possible that relatively minor events did not show up in the tree-ring chronology.
Could it be that the curse has simply been kept in abeyance only to be resurrected at a later date? Perhaps, the earth did not have any too many close brushes with the Taurid Resonant Swarm in the past few centuries, and the curse might come back to haunt us in our lifetime?
I wondered, when is the next “1 Rabbit” year, when the New Fire Ceremony would have been observed by the Aztecs had their civilization not collapsed?
2026 is a “1 Rabbit Year”
Since the final “1 Rabbit” year of the Aztec empire was in 1506, the next one in our times should be in 2026 i.e. right this year! The Aztecs would have engaged in an elaborate New Fire Ceremony on November 14 or 16 of 2026, had they been still around.
A small clarification is needed here. As per the accounts of Bernardino de Sahagun, the New Fire Ceremony was last celebrated in 1507 AD. But that was not a “1 Rabbit” year but a “2-Reed” year. Why did the Aztecs push back the date of the New Fire Ceremony by a year?
It appears that Moctezuma II had ordered this change due to the misfortune associated with the “1 Rabbit” years.
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| Figure 6: Moctezuma II receiving the Huexotzinca embassy requesting for aid against the Tlaxcalans. Durán Codex. Source: Public Domain Image from Wikimedia Commons |
Mesoamerican scholars Arnold Lebeuf and Stanislaw Iwaniszewski have thrown light on this change in date of the New Fire Ceremony:
“However, we are told (Telleriano Remensis fol. 41 v) that because 1 Rabbit had been a famine year, Moctezuma II (ca. 1502-1520) decided to change the date of the New Fire to a more prosperous one. So the last New Fire was kindled in the year 2 Reed (AD 1507), that is in the year when in mythical times the fire was drilled for the first time in the present era. Such a manipulation of religious-ideological symbols was very common in the Pre-Hispanic Mesoamerica, and we are told that Itzcoatl (ca. 1428-1440) ordered to destroy all the old documents presumably in order co rewrite the official history of the Aztecs after they gained their independence.”[6]
This is why, only a few ethno-historical sources have conserved the notion of 1 Rabbit as the first year of a 52-year cycle. The rest, which were rewritten in later times, shifted all the celebrations of New Fire from 1 Rabbit to 2 Reed.
Now that we have that little clarification out of the way, it is time to reflect on something of immediate importance: Could the curse of “1-Rabbit” get reactivated in 2026, and cause widespread famines as well as intense meteor showers from the Taurid stream? Going by the strange weather anomalies that are currently underway, it would not be wise to discount that possibility.
The Emerging Super El Nino of 2026
Over the past weeks, meteorologists have been talking about the abrupt rise in ocean temperature in the Central and Eastern Pacific ocean, indicating of the onset of a major El Nino weather pattern.
Their forecasts indicated something shocking: the rise in temperature was happening so quickly, that the “Sea Surface Temperature Anomaly” was projected to go above 2°C (compared to long-term average) in the next few months. This is the signature of a Super El Nino, which can cause significant disruptions to the weather systems across the world in 2026 and 2027.
The most recent data from the first week of May confirms the rapid intensification. The Severe Weather Europe website reports, “New ensemble model runs from the ECMWF, NOAA, and BOM now align on a high-impact trajectory, with several forecasts suggesting this event could become the strongest El Niño in modern history, potentially surpassing the record-breaking event of 1877-1878.”
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| Figure 7: ECMWF i.e. European Centre for Medium-Range Weather Forecasts, long-range forecast for the 2026 El Nino. Source: Severe Weather Europe |
The Super El Nino can bring above normal temperatures, droughts and wildfires in many regions of the world. The ECMWF forecast indicates higher ocean temperatures than normal in most parts of the world over the next few months. The El Nino can also bring heavy rainfall, cyclones and flooding in some regions located around the North Atlantic and the Indian Ocean.
It should be remembered, however, that every El Nino is different in terms of its impact. The possible effects will become clearer as more data comes in and the forecasts are refined. In general, though, most parts of the world can expect extreme weather fluctuations in 2026 and 2027 – known as a “code red” atmospheric scenario.
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| Figure 9: ECMWF forecast August to October shows a significant El Nino anomaly across the Pacific, exceeding the 2°C threshold. Source: Severe Weather Europe |
I was startled to realize that in a “1 Rabbit” year like 2026, a Super El Nino is developing which can potentially bring wildfires, droughts and famines to many parts of the world, including the Aztec heartland.
Already many regions of the world – in Africa and the Middle East - are reeling from intense drought. A recent study indicates that, more than 60% of the US is experiencing the worst drought in decades.
Wildfires are not letting up either. This report states that, wildfires have already burned through over 150 million hectares globally in 2026, between January and April. This is the highest figure on record for the period; and 50 per cent higher than the average for the same period, between 2012 and 2025. Scientists are warning that the Super El Nino could worsen the situation.
The Middle East conflict is increasing the woes. It has brought the shipment of 25% of the world's fertilizer to a virtual standstill, threatening agricultural yields in Africa and Asia.
The unhinged, depraved rulers of the world seem to be conspiring with nature to drive a large fraction of humanity to starvation. It’s almost as if the curse of “1 Rabbit” is back with a vengeance after lying in a state of dormancy for centuries.
I wondered if we might also experience an intense Taurid meteor shower later this year, and get totally “one rabbited”! While there is no way to predict that, 2026 has been a really weird year when it comes to fireballs.
The Strange Fireballs of 2026
In the first three months of 2026, there was significant surge in fireball sightings across the US and Europe. About double the usual number of sightings were reported to the American Meteor Society.
As per this NYT report, of the 40 reported sightings, 33 unleashed thunderclap-like sonic booms, either while entering the atmosphere or exploding in the atmosphere – suggesting that these space rocks were larger than normal. A meteor in Ohio broke up into many pieces and scattered over a wide area. Some of the pieces even smashed through the roof’s of people’s homes.
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| Figure 10: A fireball is an exceptionally bright meteor that can be seen over a wide area. |
The funny thing is, no-one really knew where these meteors were coming from, since the earth was not passing through any known meteor stream at that time of the year.
But now, NASA postdoctoral fellow Patrick Shober has a probable explanation, as per this MSN report. Shober identified a cluster of 282 meteors originating from a small asteroid breaking apart as it approaches the Sun. The earth is currently moving through the debris stream of this asteroid. This could have caused the increased meteor activity earlier this year, many of which caused fireballs and sonic booms.
There is a saying that the morning shows the day. I wondered if the bright fireballs were a “sign” that we may experience a particularly intense episode of Taurid meteor showers later this year. After all we are in a “1 Rabbit” year. Can’t rule it out.
If an intense Taurid shower does occur, it will exacerbate the difficult climatic conditions caused by the Super El Nino. The meteor dust may block out the Sun, causing an autumn frost and further crop damage – like in the years 1453 and 1454.
The Aztec civilization may have perished, but their calendars have not lost their relevance. These ingenious, interlocked systems of timekeeping worked in tune with the rhythms of the universe, revealing hidden perils before they came to pass. It will not be prudent for us to ignore or dismiss the curse of the “1 Rabbit” year this time around. Rather, we should pay heed and prepare contingency plans for the emerging climatic scenario.
While the Aztecs had instituted the New Fire Ceremony to stave off the famines – and specifically the Taurid meteors - that typically afflicted them at the end of a 52-year cycle, there is more to it than just that. They also believed that the Taurid meteors will, one day, bring about the end of the Fifth Sun.
The End of the Fifth Sun
The Aztecs believed that our world went through a Cycle of Five Suns - akin to the Yuga Cycle or the Cycle of the Ages - and they were living in the era of the Fifth Sun. In each of the four previous Suns, there was a gradual deterioration of human virtues until the era came to a cataclysmic end.
The era of the Fifth Sun had begun in a “1 Rabbit” year, and it will also end in a “1 Rabbit” year, when the New Fire is not drilled successfully. This belief encodes the understanding that the end of the Fifth Sun will be brought about by meteor impacts originating from the Taurid meteor stream – and particularly the Taurid Resonant Swarm – since the New Fire Ceremony was instituted for tracking the close brushes of the earth with the Taurid swarm.
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| Figure 11: The Aztec Calendar Stone depicts the interlocking calendar systems of the Aztecs, with Tonatiuh, the Sun God, at the center. On display at the National Museum of Anthropology, Mexico City. Credit: Bibhu Dev Misra |
As 2026 is a “1 Rabbit” year, could that mean that the end of the Fifth Sun can occur this year? I don’t think so, since the earth will not be passing through the center of the Taurid Resonant Swarm in 2026.
The end of the Fifth Sun implies a planetary scale renewal, and that kind of a cataclysmic reset can only happen when we pass through the dead center of the Taurid swarm. In my book Yuga Shift, I have posited that the passage of the earth through this swarm – which happens every 2500 to 3000 years – was primarily responsible for each of the four Yuga-ending cataclysms in the descending Yuga Cycle, which began around 12,000 years ago.
However, the earth will be passing through the absolute center of the Taurid swarm in the years 2032 and 2036! These could be the powerful events that pull down the curtains on the era of the Fifth Sun and bring the decadent and destructive ideologies of the Kali Yuga to an end.
So, although 2026 is unlikely to be the end of the Fifth Sun, we could have a close brush with the Taurid Resonant Swarm later this year, that wakes us up to the fact that the end of the Fifth Sun is not far away.
It is becoming clearer by the day that our ancestors no primitives; rather, they were the veritable masters of tracking large cycles of time. They were far more aware of the pulse of the cosmos and of the ebbs and flows of time, than we are today. This accumulated wisdom of the ages, they had encoded into their sacred symbols and their intricate systems of time-keeping.
The information coming to us from multiple ancient traditions hint at the same thing: we are living in a time of phenomenal shift between the ages. Cycles are ending, prophecies are getting fulfilled, nature is getting into a cleansing mode, and the awful signs of degeneration and insanity are proliferating all around us. These are the times we should avoid getting caught up in the frenzy and endless distractions of the outer world, and instead, trust our soul instincts and rely on the ancient wisdom teachings to guide us on our path to higher consciousness.
References
[1] Carleton Beals, Stories told by the Aztecs before the Spaniards came, Abelard-Schuman: London, 1970, p.141-144.
[2] Karl Taube, Aztec and Maya Myths, University of Texas Press, 1993
[3] Arnold Lebeuf and Stanislaw Iwaniszewski, "Time and Astronomy at the Meeting of Two Worlds", Proceedings of the International Symposium held in April 27 - May 2, 1992, in Frombork, Poland, Warsaw University, 1994
[4] Robert Matthews, “Earth on course to pass through vast swarm of meteors”, The National, 22 June 2019, https://www.thenational.ae/uae/science/earth-on-course-to-pass-through-vast-swarm-of-meteors-1.877579
[5] MATTHEW D. THERRELL, DAVID W. STAHLE, AND RODOLFO ACUÑA SOTO, "Aztec Drought and the “Curse of One Rabbit”", AMERICAN METEOROLOGICAL SOCIETY, SEPTEMBER 2004, pp 1263-72
[6] Arnold Lebeuf and Stanislaw Iwaniszewski, "Time and Astronomy at the Meeting of Two Worlds", Ibid.
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