The planet of Aurei has a binary star system with two heartbeat suns. It also has one tidally locked moon that behaves like Earth’s moon. The two suns do not rise at exactly the same time. The larger sun rises first, followed by the smaller one. The larger one also sets before the smaller one….

Dates in the Imperial Calendar of the Skylands consist of two parts, the era and the date, separated by a middle dot (·). For example, the date "Shuang 63 · Amu 2" is read in full as "the second day of Amu in the 63rd year of the Shuang era." There are thirteen months, each…