Suiyoubi

Suiyoubi is the Japanese word for Wednesday. In the Japanese week system, it is the fourth day, following Getsuyoubi (Monday), Kayoubi (Tuesday), and preceding Mokuyoubi (Thursday), Kinyoubi (Friday), Doyoubi (Saturday), and Nichiyoubi (Sunday). The name "Suiyoubi" is derived from the planet Mercury, which in Japanese is called "Sui-sei" (水星). This naming convention is shared with many other cultures, where Wednesday is often associated with Mercury or a similar deity. For example, in English, Wednesday comes from "Woden's day," referring to the Germanic god Woden, often equated with Mercury. Similarly, in Romance languages, Wednesday is often named after Mercury, such as mercredi in French and miércoles in Spanish. In Japan, the days of the week are named after celestial bodies, and Suiyoubi honors the planet Mercury. The traditional Japanese calendar often uses a six-day week (rokuyou) in addition to the seven-day week, but Suiyoubi corresponds to the common Wednesday in the standard seven-day cycle.