Six persons A, B, C, D, E, and F are going to the office in a week starting from Monday and ending on Saturday of the same week. B is not going office on Thursday and Friday. E is going to the office just after F, who is not going to the office on Friday. There is a gap of two days between persons B and C, where B is going after C. A is going on the first day of the week. On which day D is going to the office?