The Dayflower is a broad-leafed plant with a large, vase-shaped translucent flower that the arboreals use to tell time.
The flower fills with water steadily over the course of the day counting out thirty intervals as hours. Each hour is broken into four smaller sections called measures, and that is generally the smallest increment of time most arboreals are interested in using, though sometimes they refer to blinks for anything that happens faster.
Each evening, the Dayflower tips over completely and empties out its contents to begin anew. Filling a Dayflower with another water source doesn’t work, it is perfectly balanced pressure.