DATES & WORKING DAYS · ORIGINAL EXERCISE
Close the month’s books
Return the final calendar date of the month containing E2. Return the serial number.
This quest practices EOMONTH 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
- EOMONTH finds a month’s final date.
- Its second argument is a month offset.
- Offset 0 means the same month as E2.
Show the worked solution
=EOMONTH(E2,0)EOMONTH is useful for reporting cutoffs and invoice periods. It calculates the actual month end rather than assuming 30 or 31 days.
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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