The calendar gets a leap year
The year is not a whole number of days, and that has cost much labour
See it on the timeline →In depth
The eleven-minute annual error had grown to ten days by 1582, when Pope Gregory XIII struck them out — in Catholic countries the fourth of October was followed by the fifteenth. Protestant and Orthodox countries waited for centuries, so Europe held different dates at the same time. Terra Saga uses the proleptic Gregorian calendar throughout, so comparison across countries is possible at all.
For children
The Earth takes 365 days and nearly six hours to go round the sun. Without leap years the calendar slowly slides out of step with the seasons. Caesar introduced the leap year in 45 BCE, but the rule was still slightly too coarse.
Connects to
Part of Terra Saga — the story of Earth on a timeline. terrasaga.org