> sunday is 7 My understanding is that all days except Sunday "week-day" (星期日) are numbered. Monday is (星期一) "week-one". So there is still some room for ambigu

> sunday is 7 My understanding is that all days except Sunday "week-day" (星期日) are numbered. Monday is (星期一) "week-one". So there is still some room for ambiguity left if you allow for counting from 0.