How Many Days Until December 21st?
Time Remaining Until December 21, 2025:
- 10 months 1 day
- 43 weeks 3 days
- 7,296 hours
There are three hundred and four days remaining until December 21, 2025. This is calculated from today's date, which is February 20, 2025.
| On Date | Countdown to December 21st |
|---|---|
| February 16, 2025 | 308 days |
| February 17, 2025 | 307 days |
| February 18, 2025 | 306 days |
| February 19, 2025 | 305 days |
| February 20, 2025 | 304 days |
| February 21, 2025 | 303 days |
| February 22, 2025 | 302 days |
| February 23, 2025 | 301 days |
| February 24, 2025 | 300 days |
How Many Work Days Are Left Until December 21st?
Weekdays Until December 21st
217 days
You can use our business days calculator to find how many working days are between any two dates.
It's important to note that this does not consider holidays that may fall on a weekday, such as Thanksgiving. So, you'll need to adjust this to account for holidays that you do not work.
How To Calculate the Days Until December 21st
You can count down the days until 12/21 in a few ways. The easiest is to use a calculator, such as our days until date calculator. You can also calculate the days manually or use a spreadsheet formula.
Method One: Calculate the Days Manually
If the current date falls in December, then you can simply subtract the current day of the month from 21. The resulting value is the number of days remaining.
days until 12/21 = 21 – current day in December
If the current date is not in December, then you can subtract the current day of the month from the number of days in the current month to find the remaining days in that month. Then, to that value, you can add the number of days in each month before December, and then add 21 for the number of days in December.
days until 12/21 = days left in the current month + days in next month + … + 21
Method Two: How To Calculate the Days Using Google Sheets
You can also calculate the number of days remaining until 12/21 using spreadsheet software such as Google Sheets or Microsoft Excel. You can do this using a few different formulas.
From the Current Date
If you want to find the number of days remaining from the current day, you can use the following function in a cell to calculate that number:
=DATE(2025, 12, 21) - TODAY()
Note that this formula calculates and displays the number of days once you type the formula into a cell and hit Enter.
From Any Date
If you want to find the number of days remaining from a specific date listed in another cell, in this case, from a date in cell A1, then you can use the following function to display the number of days remaining from the date displayed in cell A1:
=DATE(2025, 12, 21) - A1