Thursday, the Day of Thor
Irrational Geographic is so often concerned with notions ancient and arcane that, in this novel entry, I’ve decided to take an opposite approach. Today is Thursday, the 6th of August. So as to remain as temporally present and as commonplace as possible, I have decided to make an inquiry into Thursday itself. One seventh of our shared existence is spent inside of this designated period of time, so its origins, both as an entity and as a word, are of undeniable interest.

An artistic representation of the months and seasons of the modern Gregorian calendar, here juxtaposed with the ancient Hebrew calendar.
Thursday is designated the fifth day of the week according to the Gregorian calendar, which is currently the Western standard for the temporal demarcation of the year (There are, of course, other calendrical systems currently in use, including the Jewish and Hindu calendars, and that of the Nigerian Igbo with their curious four-day week). This is only the case due to the fact that Sunday is widely designated as the week’s first day, an honor bestowed upon the day, named after the year-defining sun (from the Old English word Sunnendaeg, “Day of the sun”), by Judeo-Christian calendrical tradition. Some nations including The United Kingdom, on the other hand, still consider Sunday to be the week’s seventh day, making Thursday the fourth. The Chinese word for Thursday, in fact, means fourth. The ancient Greeks and Romans would have taken issue with this, however, each designating their equivalent of Sunday as the week’s first day, associating it with supreme divinity.

The legendary Colossus of Rhodes, one of the Seven Wonders of the Ancient World, depicted Helios, the Greek sun god, for whom the first day of the week was named.
Despite the fact that Thursday sits on the opposite side of the week from Sunday, its namesake is certainly a source of great historical power and significance. Its moniker originates in a culture very different than that of Sunday. Thursday takes its name from Thor, simultaneously the ancient Norse god of thunder and Germanic god of protection.

”Thor’s Battle Against the Giants” by Swedish painter Marten Eskil Winge, 1872.
One of the oldest recorded deities of Scandinavian polytheistic culture, Thor (also referred to as Donor in some Germanic linguistic traditions) served as a symbol of Pagan resistance and cultural pride in the face of the monotheistic Christian encroachment upon Scandenavia beginning in the 8th century. Perhaps the fact that remnants of Thor grace our modern calendars (Thursday having taken the place of Dies Iovis, the ancient Latin “Day of Jupiter”) suggests that this resistance was never fully quelled despite the fact that, by the 12th century, Christianity had all but beaten Paganism out of the region.

A Medieval map of Scandinavia.
Like the evergreen tree decorated with candles and ribbons displayed during the Christmas celebration, the prominent inclusion of Thor’s name in a predominantly Judeo-Christian calendar is an instance of the hybridization of Pagan and monotheistic traditions that has survived into modern times. While the Christian crusaders of the Middle Ages may have aimed to bend the world to their will, they themselves received some cultural battle scars that are still visible today. Our word for Thursday is just such a scar, scratched approximately fifty two times across the face of every modern Western calendar.
Some Further Reading:
A look at the Igbo calendar as it relates to the notion of a spiritual cosmic order
A simple breakdown of the Hindu calendar
A tool that allows for the conversion of dates between the Gregorian and Jewish calendars
An essay that discusses the origins of the Christmas tree and its Pagan connections
A Wikipedia entry including some excellent charts comparing day nomenclature cross-culturally
Earthquake Fish, Earthquake Weather, Earthquake Clouds, Earthquake Light
Appearing in ancient texts from many cultures across the globe, earthquakes have been a source of fear and speculation since time immemorial. With an average of 18 major temblors striking per year (mostly in the Pacific Ring of Fire), it is small wonder that this violent phenomenon has driven humans to desperate attempts at earthquake prediction. While few modern cultures accept, as some once did, that earthquakes are caused by celestial struggles or air trapped beneath the earth’s surface, many still point to early warning signs with origins in ancient mythology. The following earthquake prediction techniques are not supported by mainstream modern science, but are nonetheless widely embraced by individuals and organizations determined to gain a foothold against one of nature’s most destructive habits.
Earthquake Fish

More commonly known as the ribbonfish, these oddly shaped creatures dwell at great depths and commonly measure up to 8 feet long. Taiwanese legend points to these slender fish when attempting to predict earthquakes, claiming that these deep-sea dwellers rise to the surface in the moments before a quake strikes. Modern seismology has shown no correlation between the activities of these fish and actual earthquakes.
Earthquake Weather

Some claim that the Loma Prieta earthquake that ravaged the San Francisco Bay Area in 1989 was preceded by "earthquake weather". This photograph depicts the part of the Bay Bridge that collapsed during the temblor, which was broadcast on live TV due to the fact that the San Francisco Giants were playing in the World Series at the time.
Perhaps the most prevalent folk superstition regarding earthquakes in the modern day United States, the notion of earthquake weather in Western culture dates at least as far back as Herodotus (486 BC – 425 BC). Aristotle wrote about this meteorological phenomenon as well, attributing earthquakes to subterranean winds. Warm, calm weather, he believed, would precede seismic activity. While modern seismologists dismiss this notion as foolish and unfounded, I have personally witnessed this widespread superstition in action. On one unseasonably warm afternoon in San Francisco I was warned by multiple people to be wary, for we were experiencing, they claimed, typical earthquake weather. Fortunately, that day ended without disaster.
Earthquake Clouds

Discussed by Indian scholar Daivajna Varāhamihira as early as the 6th century, peculiar cloud formations are believed by some to rapidly appear in anticipation of earthquakes. Similar observations have appeared in Chinese and European writings of antiquity. These long, slender clouds that have been likened to snakes are said to form in a matter of seconds, acting as a grim premonition to observers below. Modern seismologists are divided about the legitimacy of this prediction technique, which does, at least superficially, seem to show some semblance of legitimacy. These clouds, it is hypothesized, correspond to temperature changes along fault lines that can accompany increased seismic activity and the eruption of heated gasses. The thermodynamic mechanisms by which terrestrial temperature changes affect cloud formation, however, have still yet to be demonstrated in a way that satisfies the scientific community. Until this can be successfully done, earthquake clouds will remain relegated to the realm of superstition.
Earthquake Light

This beautiful luminescence was spotted in the sky over Tianshui, Gansu province about 30 minutes before the Sichuan earthquake of May 12, 2008.
Similar in appearance to the polar aurorae (borealis and austrialis), earthquake light is said to include a wider range of colors. Having been embraced as a harbinger of earthquakes since ancient Greece, several 20th century earthquakes have, many claim, been preceded by these beautiful lights. Minutes before an earthquake struck the Sichuan province of China in 2008, cell phone video footage of these lights was uploaded to the website Youtube.com. Skeptics contend that these lights were merely the result of sunlight refracted by atmospheric moisture. Neuroscientist Michael Persinger has attempted to explain these mysterious lights through his Tectonic Strain Theory, which links seismic activity to electromagnetic fields that can be misinterpreted by human cognition as lights or even UFOs.
While each of these prediction techniques has its fervent proponents, evidence for their reliability is not sufficient enough for them to be employed by the United States Geological Survey Earthquake Hazards Program. This does little, however, to dissuade individuals from looking to ancient wisdom for comfort in the face of a violent force so overwhelmingly powerful that it effortlessly causes the world’s most developed nations to grovel before it in fear. This speaks to the common occurrence of drastic emotion overriding and even dashing to bits all the pristine knowledge of the academic ivory tower. In the face of violent death, sometimes there is only the terrified individual against an indifferent quagmire of external forces.
Some Further Reading:
A frequently updated site tracking earthquake clouds
The United States Geological Survey’s homepage for earthquake information
An article exploring many facets of earthquake clouds
A brief look at the Tectonic Strain Theory
The National Earthquake Information Center
An article proposing a scientific explanation for earthquake lights
A video depicted the earthquake lights that purportedly predicted the Sichuan quake of 2008
The Haunting Specter of Phobos

The planet Mars is orbited by two irregularly shaped moons, neither larger that 15 kilometers across. The smaller of the two, named Phobos after the Greek god of terror, measures only about 11 kilometers across and is closer to its primary planet than any other moon in our solar system. It is so close to the surface of Mars, in fact, that it orbits the planet twice daily. What has led astronomers, writers, and science fiction enthusiasts to so much speculation regarding Phobos is its peculiar size and shape, making it look like a sinister extra terrestrial skull drifting through the void of space.

This series of photos shows Phobos passing in front of the sun, as seen from the surface of Mars by the NASA rover Opportunity
Discovered in 1877, Phobos has long stood out amongst non-planetary astronomical bodies due, in addition to its odd shape, to the non-reflective quality of its surface. This has led astronomers to speculate that it may have originally been an interstellar asteroid that was caught in Mars’ gravitational orbit. The porous nature of its composition suggests that Phobos’ mass is startlingly low, an observation which led to a widely-held theory, popular in the 1950s and 1960s, that Phobos is nothing more than a hollow metal shell, perhaps serving as a Martian space station. This reasoning has been called into serious question by more recent observations.

When studying Phobos from afar, much attention has been paid to its series of odd and quite large craters. Several of these are named after characters from Jonathan Swift’s 1726 novel Gulliver’s Travels, which hypothesized that Mars has two moons many years before this was discovered to be the truth. The largest crater, dubbed Stickney after the wife of the astronomer who first identified Phobos, measures 9 kilometers across.

Stickney Crater as seen by the Mars Reconnaissance Orbiter
What makes Phobos an object of particular interest, however, is not its curiously porous composition. Phobos stands out in the night sky because of the undefinably ghastly quality of its appearance. Whether imagined as the rotted skull of an immense species long extinct, a ghostly bit of refuse from a distant, wicked solar system, or a malicious eye socket gazing at us from a mere 35 million miles away, Phobos is aptly named. It seems fitting, then, that Phobos itself is not long for this world. Due to its low orbit, Phobos is expected to, in about 11 million years, crash into the surface of Mars, crushing this celestial wraith into bits of dust.
Some Further Reading:
Some interesting facts about Phobos
A succinct list of facts about Phobos, complete with various maps and images










