The Waterbe Calender is the way the Waterbe measure dates. It represents dates after 1ce with 'ce' and before with 'bce'. The current Waterbe year is 2565ce.
The year 1ce was chosen to coincide with the rise of agriculture and the first post-hunter civilisation. Other notable events around 1ce include the domestication of the Noogle (the ancestor of the modern Oogle) and the invention of knifes and swords.