DATES & WORKING DAYS · ORIGINAL EXERCISE
Renew the charter
Move the start date in E2 forward by one calendar month using EDATE. Return its serial number.
This quest practices EDATE 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
- A month is not always 30 days.
- EDATE takes a start date and number of months.
- Use 1 to move forward one month.
Show the worked solution
=EDATE(E2,1)EDATE keeps the day when possible and clips to the last valid day in a shorter month. January 30 moves to February 28 in 2026.
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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