DATES & WORKING DAYS · ORIGINAL EXERCISE
Measure the crossing
Find elapsed calendar days from the start date E2 to the end date F2. Do not count the start day as an extra day.
This quest practices DAYS using a fictional business dataset. Read the sheet below, then enter the interactive quest to write and check your formula.
| Shipment | Year | Month | Day | Start serial | End serial | Holiday serial |
|---|---|---|---|---|---|---|
| S-201 | 2026 | 1 | 30 | 46052 | 46066 | 46055 |
| S-202 | 2026 | 2 | 13 | 46066 | 46080 | 46062 |
| S-203 | 2026 | 3 | 5 | 46086 | 46100 | |
| S-204 | 2026 | 4 | 17 | 46129 | 46143 |
Hints to get you started
- DAYS takes end date first, start date second.
- Both dates are already serial numbers.
- Use F2 before E2.
Show the worked solution
=DAYS(F2,E2)Elapsed calendar days are end serial minus start serial. This includes weekends and holidays.
Make the skill stick
After solving the task, explain what each reference does and why the formula answers the business question. Try the workbook download inside the quest to practice in your own spreadsheet app.
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