Durin's Day

Durin's Day is the first day of the dwarves' New Year, a term that appears in the moon-letters on Thror's Map and becomes a crucial, time-sensitive element of Thorin's quest to reclaim the lost treasure of his people. The day is defined as the first day of the last moon of Autumn on the threshold of Winter, when the last moon of Autumn and the sun are in the sky together. This rare celestial alignment is the only condition under which the secret door to the Lonely Mountain can be opened, as the setting sun's last light will shine upon the key-hole. The dwarves themselves, however, admit that it passes their skill in those days to guess when such a time will come again, making the quest's success hinge on an unpredictable natural event.

Definition and Origin

The name "Durin's Day" honors Durin, whom Thorin identifies as "the father of the fathers of the eldest race of Dwarves, the Longbeards, and my first ancestor: I am his heir." The day is thus not merely a calendar date but a sacred marker of dwarven heritage, linking the present quest to the ancient lineage of the Line of Durin. The moon-letters on Thror's Map, which Elrond reads by the light of a crescent moon on midsummer's eve, reveal the instruction: "Stand by the grey stone when the thrush knocks, and the setting sun with the last light of Durin's Day will shine upon the key-hole." This message, written long ago with silver pens, can only be seen when the moon shines behind them, and with the more cunning sort it must be a moon of the same shape and season as the day when they were written.

Role in the Quest

The dwarves' journey is structured around the hope of reaching the secret door by Durin's Day. When they bid farewell to Elrond on a midsummer morning, they speak gaily of riding swift across the lands beyond and coming to the secret door in the Lonely Mountain "perhaps that very next last moon of Autumn—'and perhaps it will be Durin's Day' they had said." Only Gandalf shakes his head and says nothing, aware of the dangers that lie ahead. The quest's timeline is thus set against the natural calendar, and the dwarves' delays—through the Misty Mountains, Mirkwood, and the Elvenking's halls—create a mounting anxiety about whether they will arrive in time.

The Opening of the Secret Door

The secret door is finally discovered and opened on the last day of autumn, when the sun sinks and the thin new moon appears above the rim of Earth. At that moment, an old thrush knocks a snail against a grey stone, and a red ray of the setting sun escapes through a rent in the cloud, shining straight through the opening into the bay and falling on the smooth rock-face. A flake of rock splits from the wall, and a hole appears. Thorin then uses the key that went with the map, fitting it into the hole and turning it. The door swings inward, revealing a dark passage leading into the Mountain. The timing is exact: the sun sinks, the moon is gone, and evening springs into the sky, confirming that the dwarves have arrived at the precise moment of Durin's Day.

Significance

Durin's Day functions as a narrative device that imposes a strict deadline on the quest, transforming the journey from a simple treasure hunt into a race against time. It also reinforces the theme of dwarven heritage and the importance of ancient knowledge, as the moon-letters and the understanding of Durin's Day are essential to the quest's success. The day's rarity and the dwarves' inability to predict it add an element of uncertainty and fate, underscoring the role of luck and the intervention of natural forces in the adventure. The successful opening of the door on Durin's Day marks a turning point in the story, leading directly to Bilbo's encounter with Smaug and the subsequent events that culminate in the dragon's death and the Battle of the Five Armies.