日期从周数和工作日名称

Question

Is it Possible to get the Date from the given Week Number and the Day Name?

for Example if the below criteria matches then the outcome would the a date

   Year: 2019
   Week Number: 45
   Day Name: Friday
   Outcome: 8/11/19

How is this possible?

Answer 1

Try this formula:

=DATE(B1,1,1)+(B2-1)*7+MATCH(B3,{"Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"},0)-WEEKDAY(DATE(B1,1,1)+(B2-1)*7,2)

See this picture for the meaning of input cells:

Answer 2

Suppose that you've three columns

1. Year at A2
2. Week Number at B2

3. Day Number at C3
   
   You can use following formula to get exact date
   

   =DATE(A2, 1, C2-3) - WEEKDAY(DATE(A2, 1, 3)) + B2 * 7

Note! This formula is based on ISO week numbers, with a week starting on Monday