Why TODAY and NOW in Google Sheets? - Purpose & Use Cases

The Big Idea

What if your spreadsheet could always know the exact date and time without you typing anything?

The Scenario

Imagine you need to keep track of the current date and time in your budget or schedule spreadsheet. You try to type the date and time manually every day or every time you open the sheet.

The Problem

Manually entering dates and times is slow and easy to forget. You might enter the wrong date or time, or forget to update it, making your data inaccurate and unreliable.

The Solution

The TODAY and NOW functions automatically insert the current date or date and time. They update themselves whenever you open or change the sheet, so you always have the latest information without lifting a finger.

Before vs After

✗ Before

Type '4/27/2024' or '4/27/2024 10:30 AM' every day

✓ After

=TODAY() or =NOW()

What It Enables

You can create dynamic reports and schedules that always show the current date and time, saving you time and avoiding mistakes.

Real Life Example

A project manager uses =TODAY() to highlight overdue tasks automatically, so they never miss a deadline.

Key Takeaways

Manually typing dates and times is slow and error-prone.

TODAY and NOW update automatically with the current date and time.

They help keep your spreadsheets accurate and up-to-date effortlessly.

Practice

1. What does the TODAY() function return in Google Sheets?

easy

A. The current date and time

B. The current time without the date

C. The current date without the time

D. A fixed date set by the user

Solution

1. Step 1: Understand the purpose of TODAY()

   The TODAY() function returns the current date only, without any time information.

2. Step 2: Compare with other functions

   NOW() returns both date and time, so it is different from TODAY().

3. Final Answer:

   The current date without the time -> Option C

4. Quick Check:

   TODAY() = current date only [OK]

Hint: TODAY() shows date only, no time included [OK]

Common Mistakes:

• Confusing TODAY() with NOW()
• Expecting time to be included in TODAY()
• Thinking TODAY() returns a fixed date

2. Which of the following is the correct way to write the formula that shows the current date and time in Google Sheets?

easy

A. =NOW()

B. =TODAY()

C. =CURRENT()

D. =DATE()

Solution

1. Step 1: Identify the function for current date and time

   The function NOW() returns the current date and time in Google Sheets.

2. Step 2: Check other options

   TODAY() returns only the date; CURRENT() and DATE() are invalid or require parameters.

3. Final Answer:

   =NOW() -> Option A

4. Quick Check:

   NOW() = current date and time [OK]

Hint: Use NOW() for date and time, TODAY() for date only [OK]

Common Mistakes:

• Using TODAY() to get time
• Typing CURRENT() which is not a valid function
• Using DATE() without parameters

3. If cell A1 contains the formula =NOW() and cell A2 contains =TODAY(), which of the following is true about their outputs?

medium

A. A1 shows date only; A2 shows date and time

B. Both show date only

C. Both show date and time

D. A1 shows date and time; A2 shows date only

Solution

1. Step 1: Understand outputs of NOW() and TODAY()

   NOW() returns current date and time; TODAY() returns current date only.

2. Step 2: Match outputs to cells

   Cell A1 with =NOW() shows date and time; A2 with =TODAY() shows date only.

3. Final Answer:

   A1 shows date and time; A2 shows date only -> Option D

4. Quick Check:

   NOW() = date & time, TODAY() = date only [OK]

Hint: NOW() includes time, TODAY() does not [OK]

Common Mistakes:

• Swapping outputs of NOW() and TODAY()
• Expecting TODAY() to show time
• Thinking NOW() shows date only

4. You entered =TODAY (without parentheses) in a cell. What will happen?

medium

A. It will show an error

B. It will show the current time

C. It will show the text '=TODAY'

D. It will show the current date

Solution

1. Step 1: Check function syntax

   Functions in Google Sheets require parentheses, even if empty, so =TODAY is incomplete syntax.

2. Step 2: Result of missing parentheses

   Without parentheses, Google Sheets returns an error indicating invalid formula.

3. Final Answer:

   It will show an error -> Option A

4. Quick Check:

   Functions need () to work, else error [OK]

Hint: Always include () after function names [OK]

Common Mistakes:

• Omitting parentheses for functions
• Expecting function to work without ()
• Typing function name as text

5. You want to create a spreadsheet that shows the current date and time in cell A1 and updates automatically every time the sheet recalculates. Which formula should you use and why?

hard

A. =TODAY() because it updates date and time automatically

B. =NOW() because it updates date and time automatically

C. =NOW() but it only updates when you manually refresh

D. =TODAY() but it only updates when you open the sheet

Solution

1. Step 1: Identify function that returns date and time

   NOW() returns both current date and time, while TODAY() returns only date.

2. Step 2: Understand update behavior

   NOW() updates automatically when the sheet recalculates, showing fresh date and time.

3. Final Answer:

   =NOW() because it updates date and time automatically -> Option B

4. Quick Check:

   NOW() updates date & time automatically [OK]

Hint: Use NOW() for auto-updating date and time [OK]

Common Mistakes:

• Using TODAY() expecting time updates
• Thinking NOW() updates only on manual refresh
• Confusing update triggers for TODAY()