DATE function in Google Sheets - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the DATE function do in Google Sheets?

The DATE function creates a date value from separate year, month, and day numbers. It helps you combine these parts into one date that Google Sheets can understand.

beginner

How do you write the DATE function syntax?

The syntax is =DATE(year, month, day). You put the year, month, and day numbers inside the parentheses, separated by commas.

intermediate

What happens if you use a month number greater than 12 in the DATE function?

Google Sheets adds the extra months to the year. For example, =DATE(2024, 14, 5) means 2 months after December 2024, so it becomes February 5, 2025.

intermediate

Can the DATE function handle negative day numbers?

Yes! Negative or zero day numbers count backward from the previous month. For example, =DATE(2024, 3, 0) gives February 29, 2024 (the day before March 1).

beginner

Why is the DATE function useful instead of typing dates directly?

It helps avoid errors with date formats and lets you build dates from numbers or other formulas. This makes your spreadsheet more flexible and reliable.

What is the correct way to create the date March 15, 2024 using the DATE function?

A =DATE(2024, 3, 15)

B =DATE(3, 15, 2024)

C =DATE(15, 3, 2024)

D =DATE(2024, 15, 3)

The DATE function uses the order year, month, day. So March 15, 2024 is =DATE(2024, 3, 15).

What date does =DATE(2024, 0, 10) return?

A January 10, 2024

B Invalid date error

C December 10, 2023

D October 10, 2024

Month 0 means the month before January 2024, which is December 2023. So the date is December 10, 2023.

If you want to create February 29, 2024, which formula works?

A Both C and D

B =DATE(2024, 2, 30)

C =DATE(2024, 3, 0)

D =DATE(2024, 2, 29)

Both =DATE(2024, 2, 29) and =DATE(2024, 3, 0) return February 29, 2024 because day 0 of March is the last day of February.

What happens if you use =DATE(2024, 15, 10)?

A Returns an error

B Returns October 10, 2024

C Returns December 10, 2024

D Returns March 10, 2025

Month 15 means 12 months + 3 months, so it adds 1 year and 3 months to 2024. The date is March 10, 2025.

Why might you use the DATE function instead of typing a date directly?

A To avoid date format problems

B All of the above

C To make spreadsheets easier to update

D To create dates from numbers or formulas

The DATE function helps avoid format issues, builds dates from parts, and makes updating easier.

Explain how the DATE function works and why it is useful in spreadsheets.

Think about how you combine numbers to make a date.

Describe what happens if you use a month number greater than 12 or a day number less than 1 in the DATE function.

Consider how the function handles extra months or days.

Practice

1. What does the DATE function do in Google Sheets?

easy

A. It creates a date from year, month, and day numbers.

B. It calculates the difference between two dates.

C. It converts text to uppercase.

D. It adds numbers together.

Solution

1. Step 1: Understand the purpose of DATE

   The DATE function takes three numbers: year, month, and day, and combines them into a valid date.

2. Step 2: Compare with other options

   Other options describe different functions like date difference or text conversion, which are not what DATE does.

3. Final Answer:

   It creates a date from year, month, and day numbers. -> Option A

4. Quick Check:

   DATE function = create date [OK]

Hint: DATE joins year, month, day into one date [OK]

Common Mistakes:

• Confusing DATE with functions like TODAY or NOW
• Thinking DATE calculates differences
• Assuming DATE formats text

2. Which of these is the correct syntax for the DATE function in Google Sheets?

easy

A. DATE(month, day, year)

B. DATE(day, month, year)

C. DATE(year, month, day)

D. DATE(year-day-month)

Solution

1. Step 1: Recall DATE function syntax

   The correct order is year first, then month, then day: DATE(year, month, day).

2. Step 2: Check other options

   Options B and C have wrong order; D uses invalid syntax with dashes and no commas.

3. Final Answer:

   DATE(year, month, day) -> Option C

4. Quick Check:

   Correct syntax = DATE(year, month, day) [OK]

Hint: Remember: year, month, day order in DATE [OK]

Common Mistakes:

• Swapping day and month positions
• Using dashes instead of commas
• Putting month first

3. What is the result of =DATE(2024, 13, 1) in Google Sheets?

medium

A. December 1, 2024

B. January 1, 2025

C. January 1, 2024

D. Error

Solution

1. Step 1: Understand month overflow in DATE

   The month value 13 means 1 month after December, so it moves to January of next year.

2. Step 2: Calculate the adjusted date

   So DATE(2024, 13, 1) becomes January 1, 2025.

3. Final Answer:

   January 1, 2025 -> Option B

4. Quick Check:

   Month 13 = January next year [OK]

Hint: Months >12 roll over to next year automatically [OK]

Common Mistakes:

• Expecting error for month 13
• Thinking month 13 means December
• Ignoring automatic date adjustment

4. You entered =DATE(2023, 2, 30) but it shows March 2, 2023. Why?

medium

A. February has only 28 or 29 days, so day 30 rolls into March.

B. DATE function has a bug showing wrong dates.

C. You must enter day before month in DATE.

D. Google Sheets does not support dates in February.

Solution

1. Step 1: Check day overflow behavior

   February usually has 28 or 29 days, so day 30 is invalid and rolls over to March 2.

2. Step 2: Understand DATE auto-adjustment

   DATE automatically adjusts invalid days by adding extra days to next month.

3. Final Answer:

   February has only 28 or 29 days, so day 30 rolls into March. -> Option A

4. Quick Check:

   Invalid day rolls over to next month [OK]

Hint: Invalid days push date into next month automatically [OK]

Common Mistakes:

• Thinking DATE has bugs
• Swapping day and month order
• Believing February dates are unsupported

5. You have year in A1=2023, month in B1=11, and day in C1=35. Which formula correctly gives the valid date?

hard

A. =DATE(A1, B1+1, C1-31)

B. =DATE(A1, B1, 30)

C. =DATE(A1, 12, C1)

D. =DATE(A1, B1, C1)

Solution

1. Step 1: Understand how DATE handles overflow

   DATE automatically adjusts day 35 in November to December 5 (35 - 30 = 5 days into next month).

2. Step 2: Check each option

   =DATE(A1, B1, C1) uses original values and lets DATE fix the date correctly. Others manually change month or day, which is unnecessary or incorrect.

3. Final Answer:

   =DATE(A1, B1, C1) -> Option D

4. Quick Check:

   DATE auto-fixes overflow days [OK]

Hint: Use DATE with raw values; it fixes overflow automatically [OK]

Common Mistakes:

• Manually adjusting month or day before DATE
• Assuming DATE errors on large day numbers
• Changing month without reason