Seasonal Cycle

The Aeriel calendar is organized around celestial events rather than surface-world agricultural cycles, reflecting the primacy of sky-observation in their culture. The year is divided into twelve periods of approximately thirty days, each named for a dominant constellation visible during that period from Caelum's altitude. The period of Stormrise, occurring in what surface civilizations call midsummer, is when the great sky-storms peak in frequency and intensity; it is the most dangerous and most spiritually significant period of the year, combining physical hazard with heightened celestial observation.

The Night of Falling Stars occurs once annually, timed to a meteor shower whose regularity the Aeriels have tracked for over eight centuries. All Aeriels who are able gather on the outer platforms of the islands to observe the display without shelter or Stormglass illumination, the sky in its raw unmediated state. No business is conducted during the Night of Falling Stars. The Celestial Tide Festival marks the astronomical mid-year, when the three primary celestial bodies visible from Landorya reach their closest apparent alignment, a three-day celebration of Aeriel identity and renewal. The Dawn Vigil is observed at the winter solstice, the longest night of the year, when the entire population of Caelum remains awake through the darkness, maintaining Stormglass watch-fires to symbolically assist the sun in returning.

Agricultural rhythms in Caelum are necessarily compressed by the thin-soil growing season available on the sky-islands. Planting occurs in early spring, harvest in late summer, and the autumn months are devoted to food preservation and the critical diplomatic work of securing import agreements for the winter. This seasonal dependency on surface-world food supplies gives the autumn diplomatic cycle an urgency that the Aether Council must manage carefully each year.