Hi there!

To sum the time taken if the date has already passed, you can use the SUMIFS function in Excel. Here's how you can do it:

1. Select an empty cell where you want to display the result.
2. Type the following formula:
   Formula:

   =SUMIFS(D11:D376, B11:B376, "<"&TODAY()) 

3. Press Enter.

This formula will sum the values in column D (time taken) if the corresponding date in column B is less than today's date.

Let me explain the formula in more detail:

- SUMIFS: This is the function that will sum the values based on the criteria you specify.
- D11:D376: This is the range of values you want to sum.
- B11:B376: This is the range of dates you want to use as criteria.
- "<"&TODAY(): This is the criteria you want to use. The "<" symbol means "less than", and "&TODAY()" means today's date. So, the formula will only sum the values in column D if the corresponding date in column B is less than today's date.

Hope this helps!