220th day from risshun; typhoon-prone period
A traditional Japanese calendar term marking the 220th day from the first day of spring (risshun, around February 4). It falls around September 1 and is known as a time when typhoons are likely to strike, often associated with agricultural caution.
The 220th day from risshun is watched by farmers as a typhoon-prone period.
This year, the 220th day from risshun falls on September 1st.