The implied information is that it was during the entire week of the festival. Alternate translation: "from the first day to the last day of the week" (See: [[rc://en/ta/man/translate/figs-explicit]])
The implied information is that "the decree" was the command of Yahweh about how the Festival of Shelters was to end. Alternate translation: "as God had commanded" (See: [[rc://en/ta/man/translate/figs-explicit]])