A lunar eclipse occurs when the Earth passes between the sun and the moon, casting a shadow that gives the moon a deep reddish hue often called a blood moon. While modern astronomy explains this phenomenon through orbital mechanics, cultures across history have interpreted lunar eclipses as powerful omens, divine interventions, or moments when the boundary between the natural and supernatural grows dangerously thin. In The Reckoning, Caroline Peckham and Susanne Valenti draw on this rich cultural tradition, using the lunar eclipse as a catalyst for transformation, transgression, and the unleashing of primal forces that reshape the novel’s conflicts.

Lunar eclipses carry deep religious and ritualistic significance. In ancient Mesopotamia, eclipse omens recorded on cuneiform tablets warned of threats to the king. Journalist Franz Lidz reports that “a set of four tablets covered in cuneiform script […] a compendium of Babylonian astrologers’ observations of lunar eclipses, reveal a series of ominous predictions about the deaths of kings and the destruction of civilizations” (Lidz, Franz. “Ancient Tablets Foretold Doom Awaiting Babylonian Kings.” The New York Times, 24 Aug. 2024). In Babylonia, a series of omens guided priests to install substitute rulers during eclipses so that any celestial misfortune would fall on the proxy rather than the sovereign. 

The Inca interpreted a blood moon as a predator attacking the lunar deity Mama Killa: “‘For many cultures, the disappearance of the moon was seen as a time of danger, chaos,’ said Shanil Virani, an astronomer at George Washington University […] The Inca, for example, believed that a jaguar attacked the moon during an eclipse” and responded with weapons and ritual noise to drive it away (Hall, Shannon. “Next Up in the Night Sky: A Total Lunar Eclipse.” The New York Times, 7 Nov. 2022). In Hindu tradition, eclipses are considered periods of spiritual impurity during which devotees fast, bathe in sacred rivers, and chant mantras to counteract the malign influence of the shadow planets Rahu and Ketu. Across these traditions, a common thread persists: The eclipse represents a rupture in the cosmic order, a moment when darkness temporarily overtakes light and hidden forces gain unusual power.

This symbolism translates readily into literature, where eclipses often mark turning points or signal the intrusion of chaos into an ordered world. In Shakespeare’s King Lear, Gloucester warns that recent eclipses “portend no good to us” (Shakespeare, William. King Lear. Simon & Schuster Paperbacks, 1606), linking celestial disruption to the political and familial collapse that follows. In Mark Twain’s A Connecticut Yankee in King Arthur’s Court, a solar eclipse becomes a tool of manipulation, with the protagonist exploiting foreknowledge of the event to seize power over those around him. Whether treated as genuine portent or cynical leverage, eclipses in literature consistently function as thresholds, moments when established rules falter and new, often dangerous, possibilities emerge.

Peckham and Valenti imbue the Lunar Eclipse in The Reckoning with this symbolic weight, layering it with several narrative functions simultaneously. On its surface, the Eclipse intensifies the Fae characters’ primal instincts. Principal Nova’s advisory warns students that “all Fae will be struck by the urges of the moon and will be guided by their most base instincts and the truest desires of their hearts and flesh” (619), essentially acknowledging the faculty’s inability to contain the chaos. This framing mirrors the cultural understanding of eclipses as periods when ordinary social restraints dissolve. Characters act on desires they have suppressed, romantic tensions escalate, and confrontations simmering throughout the novel finally erupt.

The Reckoning’s Lunar Eclipse also serves as the mechanism for Lionel Acrux’s dark ritual, which acts as the novel’s climax. He exploits the event to force the Vega twins into contact with the Shadow Realm, using stardust forged under the blood moon to channel forbidden magic. This parallels the Mesopotamian association of eclipses with threats to sovereignty. Lionel utilizes the power of the Eclipse to neutralize the twins’ royal claim. The ritual also echoes the Hindu concept of eclipses as moments of spiritual contamination. When the shadows enter Tory during the ceremony, they’re described as forces moving through her wound, “weaving into [her] veins and forging a path through the fabric of [her] flesh” (695), language that frames the Eclipse’s dark magic as a bodily invasion. 

The twins’ emergence as Phoenixes during this same event subverts the expectation of destruction. Their rebirth from fire under the blood moon transforms the Eclipse from a symbol of vulnerability into one of metamorphosis, reclaiming an ancient association found in alchemical traditions where eclipses signified the dissolution and renewal necessary for transformation. By anchoring the novel’s climactic events to a lunar eclipse, the authors ensure that the celestial phenomenon operates not merely as atmospheric backdrop but as the narrative engine driving the characters toward irreversible change.