For your easy reference, the following is a list of weeks and years with their corresponding date:
16 Aug 2015 – 20th Sunday in Ordinary Time Year B
17 Aug 2015 – Monday of Week 20 Year 1
18 Aug 2015 – Tuesday of Week 20 Year 1
19 Aug 2015 – Wednesday of Week 20 Year 1
20 Aug 2015 – Thursday of Week 20 Year 1
21 Aug 2015 – Friday of Week 20 Year 1