The third argument is a list of dates that are not working days.
Each job takes the number of working days in B, starting after the date in A. Weekends and the bank holidays in E2:E4 are not working days. In C2:C5 give each job's completion date.
Solve it on your own to keep the bonus. Each hint gets one step closer to the formula.
The same formula in the other shapes it takes at work.
Calculate working days using WORKDAY.
The third argument is a list of dates that are not working days.
The reverse question: not when it ends, but how many working days it took.
This is the grid you start with. Cell references in the task — B6, C2 — point at the row numbers and column letters below.
| A | B | C | D | E | |
|---|---|---|---|---|---|
| 1 | Start | Working days | Completion | Bank holidays | |
| 2 | 12/20/2024 | 5 | 12/25/2024 | ||
| 3 | 12/23/2024 | 3 | 12/26/2024 | ||
| 4 | 12/27/2024 | 2 | 1/1/2025 | ||
| 5 | 1/2/2025 | 4 |
Without the holiday list, every job spanning Christmas finishes two days early on paper. Keeping holidays in a range — not typed into the formula — means next year's dates are a one-cell change for every formula that uses them.